Company lists · Data refreshed September 2026
Top 25 Outbound call center and mail companies worldwide
RevenueBase identified 5,558 company matches for outbound call center and mail companies worldwide as of September 2026 and tracks 145,160 professional contacts across them, including 9,191 with verified work emails. The United States is the largest market and Rawalpindi the largest hub.
This list covers company matches for outbound call center and mail companies worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 29, 2026. Country and city lists for outbound call center and mail companies follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest outbound call center and mail companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,785 contacts → | ||||
Exact match “Founded in 1993, since the beginning Sercom has stood out in the Contact Center Services.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 2 | 3,122 contacts → | ||||
Exact match “Email: info@Telvista.com Telvista is a premier provider of contact solutions that drive customer loyalty and create competitive advantage for our clients.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 3 | 2,774 contacts → | ||||
Exact match “Advanced Call Center Technologies, LLC (ACT) is a premier provider of domestic (USA), near shore and far shore outsourced call center services to the financial services, mortgage…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 4 | 2,221 contacts → | ||||
Exact match “Somos la compañía líder en Servicios Next Gen de Contact Center, Business Process Outsourcing (BPO) y Customer Experience (CX).” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 5 | 1,764 contacts → | ||||
Exact match “InfoCision is an award-winning contact center partner trusted by leading brands for over 40 years.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 6 | 1,741 contacts → | ||||
Exact match “Award-winning outsourcing partner with two decades of experience operating an exclusively nearshore strategy that delivers better performance, close to home, and at a lower cost.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 7 | 1,225 contacts → | ||||
Exact match “We deliver tailored Contact Center and Back Office solutions to our strategic partners, leveraging advanced technology and high quality standards to elevate customer experiences…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 8 | 1,198 contacts → | ||||
Exact match “The Office Gurus (TOG) is a global call center and business process outsource provider of customer care, telemarketing, lead generation, appointment setting, order entry, accounts…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 9 | 1,128 contacts → | ||||
Exact match “Crystel emerged as a leading Outsourcing Service Provider (OSP) since its establishment in Jordan in early 2007.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 10 | 1,116 contacts → | ||||
Exact match “MISIÓN Somos una compañía de Contact Center y tercerización de procesos (Business Process Outsourcing BPO), rentable, con presencia nacional; que brinda soluciones ágiles y…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 11 | 1,076 contacts → | ||||
Exact match “Even the markets know that we’re the good call’!” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 12 | 1,058 contacts → | ||||
Exact match “Em breve uma nova página da BTCC Conexão Cliente.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 13 | 978 contacts → | ||||
Exact match “Expert de la relation client depuis 1996, b2s est le N°1 de l’externalisation de votre relation client en qualité délivrée.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 14 | 902 contacts → | ||||
Exact match “Our Company Inktel is a leading business process outsourcer that specializes in creating personalized call center solutions which enable our clients to increase market share…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 15 | 883 contacts → | ||||
Exact match “If you are interested in growing your business or increasing efficiency, AnswerNet has the expertise, technology, and people to help you take your company to new heights!” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 16 | 877 contacts → | ||||
Exact match “CBE Companies is the parent organization of CBE Customer Solutions and CBE Group.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 17 | 866 contacts → | ||||
Exact match “IWCO has served the needs of North American direct marketers for more than 50 years.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 18 | 718 contacts → | ||||
Exact match “Established in 2010, Talksure has developed a reputation for being a respected financial services provider and outsource business services partner.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 19 | 701 contacts → | ||||
Exact match “A VECTOR SERVIÇOS é uma empresa especializada na criação, implantação e gestão de serviços de Contact Center.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 20 | 649 contacts → | ||||
Exact match “We at Girnar Care work towards customer satisfaction and it is also a center of customer excellence.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 21 | 623 contacts → | ||||
Exact match “Impulsamos el éxito de nuestros clientes a través de soluciones personalizadas en Contact Center y experiencia al cliente.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 22 | 598 contacts → | ||||
Exact match “Buwelo BPO is a global Business Process Outsourcing provider of multi-channel customer experience and back office solutions.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 23 | 589 contacts → | ||||
Exact match “GEXEL est un centre de contact clients fondé en 1998 et dont le siège social est au Québec.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 24 | 542 contacts → | ||||
Exact match “We are customer service experts.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 25 | 529 contacts → | ||||
Exact match “A ATN Contact Center é especialista em Relacionamento com Clientes e BPO, com 29 anos de experiência transformando a forma como empresas se conectam com seus consumidores.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “outbound call center and mail companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 5,558 outbound call center and mail companies worldwide
See the full list, filter by size, metro and specialty, and access 9,191 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Outbound call center and mail companies worldwide at a glance
As of Sep 29, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for outbound call center and mail companies are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “outbound call center and mail companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 9,191 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Outbound call center and mail companies by location
20 lists · largest firstEvery Outbound call center and mail companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Outbound call center and mail companies based in the United States994
- Outbound call center and mail companies based in India447
- Outbound call center and mail companies based in the United Kingdom269
- Outbound call center and mail companies based in the Philippines195
- Outbound call center and mail companies based in Italy138
- Outbound call center and mail companies based in Germany130
- Outbound call center and mail companies based in Canada104
- Outbound call center and mail companies based in France100
- Outbound call center and mail companies based in the Netherlands94
- Outbound call center and mail companies based in Spain88
- Outbound call center and mail companies based in Brazil75
- Outbound call center and mail companies based in Mexico65
- Outbound call center and mail companies based in South Africa58
- Outbound call center and mail companies based in Australia54
- Outbound call center and mail companies based in Colombia47
- Outbound call center and mail companies based in Türkiye47
- Outbound call center and mail companies based in Poland41
- Outbound call center and mail companies based in Argentina40
- Outbound call center and mail companies based in Belgium27
Cities
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “outbound call center and mail companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many outbound call center and mail companies are there worldwide?
RevenueBase identified 5,558 company matches for outbound call center and mail companies worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Sercom tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most outbound call center and mail companies?
The United States leads with 994 companies, followed by India (447) and the United Kingdom (269). Every outbound call center and mail companies list by country and city is linked on this page.
Which city has the most outbound call center and mail companies?
Rawalpindi leads with 108 company records, followed by Lahore (104) and Karachi (60).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 9,191 professional contacts with verified work emails tracked across these 5,558 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
Company intelligence · public preview
Top 25 outbound call center and mail companies worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 5,558 matching company records for outbound call center and mail companies worldwide, with 145,160 tracked contacts and 9,191 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 29, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 outbound call center and mail companies worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Sercomsercom.com.brHQ: Taboão Da Serra, BrazilReported employees: 5,001-10,000 | Taboão Da Serra, Brazil | 5,001-10,000 | Exact match | 3,785 contacts → |
“Founded in 1993, since the beginning Sercom has stood out in the Contact Center Services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Telvistatelvista.comHQ: Dallas, TX, United StatesReported employees: 1,001-5,000 | Dallas, TX, United States | 1,001-5,000 | Exact match | 3,122 contacts → |
“Email: info@Telvista.com Telvista is a premier provider of contact solutions that drive customer loyalty and create competitive advantage for our clients.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Advanced Call Center Technologies, LLCacttoday.comHQ: Berwyn, PA, United StatesReported employees: 5,001-10,000 | Berwyn, PA, United States | 5,001-10,000 | Exact match | 2,774 contacts → |
“Advanced Call Center Technologies, LLC (ACT) is a premier provider of domestic (USA), near shore and far shore outsourced call center services to the financial services, mortgage…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  CAT Technologies Argentinacat-technologies.comHQ: Buenos Aires, ArgentinaReported employees: 1,001-5,000 | Buenos Aires, Argentina | 1,001-5,000 | Exact match | 2,221 contacts → |
“Somos la compañía líder en Servicios Next Gen de Contact Center, Business Process Outsourcing (BPO) y Customer Experience (CX).” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Infocision Management Corporationinfocision.comHQ: Akron, OH, United StatesReported employees: 1,001-5,000 | Akron, OH, United States | 1,001-5,000 | Exact match | 1,764 contacts → |
“InfoCision is an award-winning contact center partner trusted by leading brands for over 40 years.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Km2 Solutionskm2solutions.comHQ: Boca Raton, FL, United StatesReported employees: 5,001-10,000 | Boca Raton, FL, United States | 5,001-10,000 | Exact match | 1,741 contacts → |
“Award-winning outsourcing partner with two decades of experience operating an exclusively nearshore strategy that delivers better performance, close to home, and at a lower cost.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  American Call Centeracc.com.ecHQ: Guayaquil, EcuadorReported employees: 1,001-5,000 | Guayaquil, Ecuador | 1,001-5,000 | Exact match | 1,225 contacts → |
“We deliver tailored Contact Center and Back Office solutions to our strategic partners, leveraging advanced technology and high quality standards to elevate customer experiences…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  The Office Gurustheofficegurus.comHQ: St Petersburg, FL, RussiaReported employees: 1,001-5,000 | St Petersburg, FL, Russia | 1,001-5,000 | Exact match | 1,198 contacts → |
“The Office Gurus (TOG) is a global call center and business process outsource provider of customer care, telemarketing, lead generation, appointment setting, order entry, accounts…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  crystel.cocrystel.coHQ: Amman, JordanReported employees: 1,001-5,000 | Amman, Jordan | 1,001-5,000 | Exact match | 1,128 contacts → |
“Crystel emerged as a leading Outsourcing Service Provider (OSP) since its establishment in Jordan in early 2007.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Ventas Y Servicios S.Anexabpo.comHQ: Bogotá D.c., ColombiaReported employees: 1,001-5,000 | Bogotá D.c., Colombia | 1,001-5,000 | Exact match | 1,116 contacts → |
“MISIÓN Somos una compañía de Contact Center y tercerización de procesos (Business Process Outsourcing BPO), rentable, con presencia nacional; que brinda soluciones ágiles y…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Hrhnext Services Limitedhrhnext.comHQ: Hyderabad, IndiaReported employees: 1,001-5,000 | Hyderabad, India | 1,001-5,000 | Exact match | 1,076 contacts → |
“Even the markets know that we’re the good call’!” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Btcc Call Centerbtcc.net.brHQ: Goiânia, BrazilReported employees: 10001+ | Goiânia, Brazil | 10001+ | Exact match | 1,058 contacts → |
“Em breve uma nova página da BTCC Conexão Cliente.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  B2s Business Support Servicescomdatagroup.frHQ: Gennevilliers Cedex, FranceReported employees: 10001+ | Gennevilliers Cedex, France | 10001+ | Exact match | 978 contacts → |
“Expert de la relation client depuis 1996, b2s est le N°1 de l’externalisation de votre relation client en qualité délivrée.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Inktel Contact Center Solutionsinktel.comHQ: Doral, FL, United StatesReported employees: 1,001-5,000 | Doral, FL, United States | 1,001-5,000 | Exact match | 902 contacts → |
“Our Company Inktel is a leading business process outsourcer that specializes in creating personalized call center solutions which enable our clients to increase market share…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Answernetanswernet.comHQ: Horsham, PA, United StatesReported employees: 501-1,000 | Horsham, PA, United States | 501-1,000 | Exact match | 883 contacts → |
“If you are interested in growing your business or increasing efficiency, AnswerNet has the expertise, technology, and people to help you take your company to new heights!” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  CBE Companiescbecompanies.comHQ: Cedar Falls, IA, United StatesReported employees: 1,001-5,000 | Cedar Falls, IA, United States | 1,001-5,000 | Exact match | 877 contacts → |
“CBE Companies is the parent organization of CBE Customer Solutions and CBE Group.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  IWCOiwco.comHQ: Chanhassen, MN, United StatesReported employees: 1,001-5,000 | Chanhassen, MN, United States | 1,001-5,000 | Exact match | 866 contacts → |
“IWCO has served the needs of North American direct marketers for more than 50 years.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Talksuretalksuresa.co.zaHQ: Durban, South AfricaReported employees: 501-1,000 | Durban, South Africa | 501-1,000 | Exact match | 718 contacts → |
“Established in 2010, Talksure has developed a reputation for being a respected financial services provider and outsource business services partner.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Vectorsouvector.com.brHQ: Fortaleza, BrazilReported employees: 1,001-5,000 | Fortaleza, Brazil | 1,001-5,000 | Exact match | 701 contacts → |
“A VECTOR SERVIÇOS é uma empresa especializada na criação, implantação e gestão de serviços de Contact Center.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Girnar Caregirnarcare.comHQ: Jaipur, IndiaReported employees: 501-1,000 | Jaipur, India | 501-1,000 | Exact match | 649 contacts → |
“We at Girnar Care work towards customer satisfaction and it is also a center of customer excellence.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Fastcofastcogroup.comHQ: Providencia, ChileReported employees: 1,001-5,000 | Providencia, Chile | 1,001-5,000 | Exact match | 623 contacts → |
“Impulsamos el éxito de nuestros clientes a través de soluciones personalizadas en Contact Center y experiencia al cliente.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Buwelo Corporatebuwelo.comHQ: Las Vegas, NV, United StatesReported employees: 1,001-5,000 | Las Vegas, NV, United States | 1,001-5,000 | Exact match | 598 contacts → |
“Buwelo BPO is a global Business Process Outsourcing provider of multi-channel customer experience and back office solutions.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Gexel Telecomgexel.comHQ: Montréal, CanadaReported employees: 501-1,000 | Montréal, Canada | 501-1,000 | Exact match | 589 contacts → |
“GEXEL est un centre de contact clients fondé en 1998 et dont le siège social est au Québec.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Global Contact Services GCSgcsagents.comHQ: Salisbury, NC, United StatesReported employees: 501-1,000 | Salisbury, NC, United States | 501-1,000 | Exact match | 542 contacts → |
“We are customer service experts.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  ATN Contact Centeratncontactcenter.com.brHQ: Rio De Janeiro, BrazilReported employees: 1,001-5,000 | Rio De Janeiro, Brazil | 1,001-5,000 | Exact match | 529 contacts → |
“A ATN Contact Center é especialista em Relacionamento com Clientes e BPO, com 29 anos de experiência transformando a forma como empresas se conectam com seus consumidores.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 5,558 company matches
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Outbound call center and mail companies: dataset insights
September 29, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
5,541 records in the displayed employee bands.
17 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 5,558 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 29, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Outbound call center and mail companies by location
20 lists · largest firstEvery Outbound call center and mail companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Outbound call center and mail companies based in the United States994
- Outbound call center and mail companies based in India447
- Outbound call center and mail companies based in the United Kingdom269
- Outbound call center and mail companies based in the Philippines195
- Outbound call center and mail companies based in Italy138
- Outbound call center and mail companies based in Germany130
- Outbound call center and mail companies based in Canada104
- Outbound call center and mail companies based in France100
- Outbound call center and mail companies based in the Netherlands94
- Outbound call center and mail companies based in Spain88
- Outbound call center and mail companies based in Brazil75
- Outbound call center and mail companies based in Mexico65
- Outbound call center and mail companies based in South Africa58
- Outbound call center and mail companies based in Australia54
- Outbound call center and mail companies based in Colombia47
- Outbound call center and mail companies based in Türkiye47
- Outbound call center and mail companies based in Poland41
- Outbound call center and mail companies based in Argentina40
- Outbound call center and mail companies based in Belgium27
Cities
Questions about this company list
What does Exact match mean for outbound call center and mail companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many outbound call center and mail companies did RevenueBase find worldwide?
The saved snapshot records 5,558 matching company records, 145,160 tracked contacts and 9,191 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 29, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 outbound call center and mail companies worldwide. Snapshot: September 29, 2026. https://revenuebase.ai/companies/browse/outbound-call-center-and-mail-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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Company intelligence · public preview
Top 25 outbound call center and mail companies worldwide
RevenueBase records 5,558 matching company records for outbound call center and mail companies worldwide, with 145,160 tracked contacts and 9,191 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 29, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 outbound call center and mail companies worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Sercomsercom.com.br HQ: Taboão Da Serra, BrazilReported employees: 5,001-10,000 | Taboão Da Serra, Brazil | 5,001-10,000 | Exact match | 3,785 contacts → |
“Founded in 1993, since the beginning Sercom has stood out in the Contact Center Services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Telvistatelvista.com HQ: Dallas, TX, United StatesReported employees: 1,001-5,000 | Dallas, TX, United States | 1,001-5,000 | Exact match | 3,122 contacts → |
“Email: info@Telvista.com Telvista is a premier provider of contact solutions that drive customer loyalty and create competitive advantage for our clients.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Advanced Call Center Technologies, LLCacttoday.com HQ: Berwyn, PA, United StatesReported employees: 5,001-10,000 | Berwyn, PA, United States | 5,001-10,000 | Exact match | 2,774 contacts → |
“Advanced Call Center Technologies, LLC (ACT) is a premier provider of domestic (USA), near shore and far shore outsourced call center services to the financial services, mortgage…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | CAT Technologies Argentinacat-technologies.com HQ: Buenos Aires, ArgentinaReported employees: 1,001-5,000 | Buenos Aires, Argentina | 1,001-5,000 | Exact match | 2,221 contacts → |
“Somos la compañía líder en Servicios Next Gen de Contact Center, Business Process Outsourcing (BPO) y Customer Experience (CX).” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Infocision Management Corporationinfocision.com HQ: Akron, OH, United StatesReported employees: 1,001-5,000 | Akron, OH, United States | 1,001-5,000 | Exact match | 1,764 contacts → |
“InfoCision is an award-winning contact center partner trusted by leading brands for over 40 years.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Km2 Solutionskm2solutions.com HQ: Boca Raton, FL, United StatesReported employees: 5,001-10,000 | Boca Raton, FL, United States | 5,001-10,000 | Exact match | 1,741 contacts → |
“Award-winning outsourcing partner with two decades of experience operating an exclusively nearshore strategy that delivers better performance, close to home, and at a lower cost.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | American Call Centeracc.com.ec HQ: Guayaquil, EcuadorReported employees: 1,001-5,000 | Guayaquil, Ecuador | 1,001-5,000 | Exact match | 1,225 contacts → |
“We deliver tailored Contact Center and Back Office solutions to our strategic partners, leveraging advanced technology and high quality standards to elevate customer experiences…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | The Office Gurustheofficegurus.com HQ: St Petersburg, FL, RussiaReported employees: 1,001-5,000 | St Petersburg, FL, Russia | 1,001-5,000 | Exact match | 1,198 contacts → |
“The Office Gurus (TOG) is a global call center and business process outsource provider of customer care, telemarketing, lead generation, appointment setting, order entry, accounts…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | crystel.cocrystel.co HQ: Amman, JordanReported employees: 1,001-5,000 | Amman, Jordan | 1,001-5,000 | Exact match | 1,128 contacts → |
“Crystel emerged as a leading Outsourcing Service Provider (OSP) since its establishment in Jordan in early 2007.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Ventas Y Servicios S.Anexabpo.com HQ: Bogotá D.c., ColombiaReported employees: 1,001-5,000 | Bogotá D.c., Colombia | 1,001-5,000 | Exact match | 1,116 contacts → |
“MISIÓN Somos una compañía de Contact Center y tercerización de procesos (Business Process Outsourcing BPO), rentable, con presencia nacional; que brinda soluciones ágiles y…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Hrhnext Services Limitedhrhnext.com HQ: Hyderabad, IndiaReported employees: 1,001-5,000 | Hyderabad, India | 1,001-5,000 | Exact match | 1,076 contacts → |
“Even the markets know that we’re the good call’!” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Btcc Call Centerbtcc.net.br HQ: Goiânia, BrazilReported employees: 10001+ | Goiânia, Brazil | 10001+ | Exact match | 1,058 contacts → |
“Em breve uma nova página da BTCC Conexão Cliente.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | B2s Business Support Servicescomdatagroup.fr HQ: Gennevilliers Cedex, FranceReported employees: 10001+ | Gennevilliers Cedex, France | 10001+ | Exact match | 978 contacts → |
“Expert de la relation client depuis 1996, b2s est le N°1 de l’externalisation de votre relation client en qualité délivrée.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Inktel Contact Center Solutionsinktel.com HQ: Doral, FL, United StatesReported employees: 1,001-5,000 | Doral, FL, United States | 1,001-5,000 | Exact match | 902 contacts → |
“Our Company Inktel is a leading business process outsourcer that specializes in creating personalized call center solutions which enable our clients to increase market share…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Answernetanswernet.com HQ: Horsham, PA, United StatesReported employees: 501-1,000 | Horsham, PA, United States | 501-1,000 | Exact match | 883 contacts → |
“If you are interested in growing your business or increasing efficiency, AnswerNet has the expertise, technology, and people to help you take your company to new heights!” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | CBE Companiescbecompanies.com HQ: Cedar Falls, IA, United StatesReported employees: 1,001-5,000 | Cedar Falls, IA, United States | 1,001-5,000 | Exact match | 877 contacts → |
“CBE Companies is the parent organization of CBE Customer Solutions and CBE Group.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | IWCOiwco.com HQ: Chanhassen, MN, United StatesReported employees: 1,001-5,000 | Chanhassen, MN, United States | 1,001-5,000 | Exact match | 866 contacts → |
“IWCO has served the needs of North American direct marketers for more than 50 years.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Talksuretalksuresa.co.za HQ: Durban, South AfricaReported employees: 501-1,000 | Durban, South Africa | 501-1,000 | Exact match | 718 contacts → |
“Established in 2010, Talksure has developed a reputation for being a respected financial services provider and outsource business services partner.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Vectorsouvector.com.br HQ: Fortaleza, BrazilReported employees: 1,001-5,000 | Fortaleza, Brazil | 1,001-5,000 | Exact match | 701 contacts → |
“A VECTOR SERVIÇOS é uma empresa especializada na criação, implantação e gestão de serviços de Contact Center.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Girnar Caregirnarcare.com HQ: Jaipur, IndiaReported employees: 501-1,000 | Jaipur, India | 501-1,000 | Exact match | 649 contacts → |
“We at Girnar Care work towards customer satisfaction and it is also a center of customer excellence.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Fastcofastcogroup.com HQ: Providencia, ChileReported employees: 1,001-5,000 | Providencia, Chile | 1,001-5,000 | Exact match | 623 contacts → |
“Impulsamos el éxito de nuestros clientes a través de soluciones personalizadas en Contact Center y experiencia al cliente.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Buwelo Corporatebuwelo.com HQ: Las Vegas, NV, United StatesReported employees: 1,001-5,000 | Las Vegas, NV, United States | 1,001-5,000 | Exact match | 598 contacts → |
“Buwelo BPO is a global Business Process Outsourcing provider of multi-channel customer experience and back office solutions.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Gexel Telecomgexel.com HQ: Montréal, CanadaReported employees: 501-1,000 | Montréal, Canada | 501-1,000 | Exact match | 589 contacts → |
“GEXEL est un centre de contact clients fondé en 1998 et dont le siège social est au Québec.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Global Contact Services GCSgcsagents.com HQ: Salisbury, NC, United StatesReported employees: 501-1,000 | Salisbury, NC, United States | 501-1,000 | Exact match | 542 contacts → |
“We are customer service experts.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | ATN Contact Centeratncontactcenter.com.br HQ: Rio De Janeiro, BrazilReported employees: 1,001-5,000 | Rio De Janeiro, Brazil | 1,001-5,000 | Exact match | 529 contacts → |
“A ATN Contact Center é especialista em Relacionamento com Clientes e BPO, com 29 anos de experiência transformando a forma como empresas se conectam com seus consumidores.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 5,558 company matches
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Outbound call center and mail companies: dataset insights
September 29, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
5,541 records in the displayed employee bands.
17 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 5,558 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 29, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Outbound call center and mail companies by location
20 lists · largest firstEvery Outbound call center and mail companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Outbound call center and mail companies based in the United States994
- Outbound call center and mail companies based in India447
- Outbound call center and mail companies based in the United Kingdom269
- Outbound call center and mail companies based in the Philippines195
- Outbound call center and mail companies based in Italy138
- Outbound call center and mail companies based in Germany130
- Outbound call center and mail companies based in Canada104
- Outbound call center and mail companies based in France100
- Outbound call center and mail companies based in the Netherlands94
- Outbound call center and mail companies based in Spain88
- Outbound call center and mail companies based in Brazil75
- Outbound call center and mail companies based in Mexico65
- Outbound call center and mail companies based in South Africa58
- Outbound call center and mail companies based in Australia54
- Outbound call center and mail companies based in Colombia47
- Outbound call center and mail companies based in Türkiye47
- Outbound call center and mail companies based in Poland41
- Outbound call center and mail companies based in Argentina40
- Outbound call center and mail companies based in Belgium27
Cities
Questions about this company list
What does Exact match mean for outbound call center and mail companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many outbound call center and mail companies did RevenueBase find worldwide?
The saved snapshot records 5,558 matching company records, 145,160 tracked contacts and 9,191 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 29, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 outbound call center and mail companies worldwide. Snapshot: September 29, 2026. https://revenuebase.ai/companies/browse/outbound-call-center-and-mail-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗