Company lists · Data refreshed September 2026

Top 25 Outbound sales organizations worldwide

Name: Outbound sales organizations worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 15,304 companies tracked

RevenueBase identified 15,304 outbound sales organizations worldwide as of September 2026 and tracks 243,484 professional contacts across them, including 21,811 with verified work emails. The United States is the largest market and London the largest hub.

This list covers outbound sales organizations worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026. Country and city lists for outbound sales organizations follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

15,304Companies

243,484Contacts tracked

21,811Verified emails

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The 25 largest outbound sales organizations worldwide

Ranked by team size

Top 25 of 15,304 outbound sales organizations worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to outbound sales organizations: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Ienergizer	Indirect evidence	Noida, IndiaHQ checked Sep 21, 2026	10001+	14,745 contacts →
	Indirect evidence “iEnergizer is a leading Business Process Outsourcing provider (“BPO”) of customer management solutions dedicated to delivering performance while actively supporting and advocating…” Source: RevenueBase Database · checked Sep 21, 2026
2	Salesland	Partial evidence	Madrid, MexicoHQ checked Sep 21, 2026	10001+	4,245 contacts →
	Partial evidence “We are Sales Specialists.” Source: RevenueBase Database · checked Sep 21, 2026
3	Marketsource INC	Partial evidence	Alpharetta, GA, United StatesHQ checked Sep 21, 2026	5,001-10,000	3,063 contacts →
	Partial evidence “MarketSource, an Allegis Group company, is a sales acceleration company focused on delivering better outcomes for many of the world’s most iconic brands.” Source: RevenueBase Database · checked Sep 21, 2026
4	Advanced Call Center Technologies, LLC	Indirect evidence	Berwyn, PA, United StatesHQ checked Sep 21, 2026	5,001-10,000	2,774 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
5	Stream Global Services	Partial evidence	Eagan, MN, United StatesHQ checked Sep 21, 2026	10001+	2,772 contacts →
	Partial evidence “Stream Global Services is a premium business process outsource (BPO) service provider specializing in customer relationship management solutions including sales, customer care…” Source: RevenueBase Database · checked Sep 21, 2026
6	Marketstar	Partial evidence	Ogden, UT, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,446 contacts →
	Partial evidence “MarketStar is a global B2B sales outsourcing leader with 38+ years of experience driving predictable revenue growth.” Source: RevenueBase Database · checked Sep 21, 2026
7	Alta Resources	Indirect evidence	Neenah, WI, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,046 contacts →
	Indirect evidence “Alta Resources has always worked to be something different.” Source: RevenueBase Database · checked Sep 21, 2026
8	Allied Global	Indirect evidence	GuatemalaHQ checked Sep 21, 2026	5,001-10,000	1,979 contacts →
	Indirect evidence “Regardless of your Company’s size (from Start-ups to Fortune 500), business vertical or service requirements, we act as a seamless extension of your team to help you grow, and…” Source: RevenueBase Database · checked Sep 21, 2026
9	Webhelp Enterprise	Partial evidence	Paris, FranceHQ checked Sep 21, 2026	10001+	1,795 contacts →
	Partial evidence “The Concentrix B2B sales practice is here to design, build and run projects for our clients.” Source: RevenueBase Database · checked Sep 21, 2026
10	Pcci Group	Indirect evidence	Dakar, SenegalHQ checked Sep 21, 2026	1,001-5,000	1,702 contacts →
	Indirect evidence “Leading Customer Experience and Operations outsourcing provider in emerging markets, PCCI Group has quickly emerged as a key player delivering consistent and branded customer…” Source: RevenueBase Database · checked Sep 21, 2026
11	Channelplay Limited	Indirect evidence	Gurgaon, IndiaHQ checked Sep 21, 2026	5,001-10,000	1,697 contacts →
	Indirect evidence “Channelplay is India’s leading tech-enabled channel execution company.” Source: RevenueBase Database · checked Sep 21, 2026
12	Full Potential Solutions	Indirect evidence	Waltham, MA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,238 contacts →
	Indirect evidence “Full Potential Solutions (FPS) is a new kind of performance-based outsourcing firm that puts culture and employees first, because we believe that happy, fulfilled teams accomplish…” Source: RevenueBase Database · checked Sep 21, 2026
13	The Office Gurus	Indirect evidence	St Petersburg, FL, RussiaHQ checked Sep 21, 2026	1,001-5,000	1,198 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
14	Credico	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 21, 2026	n/a	1,188 contacts →
	Indirect evidence “Credico is the world's leading face-to-face customer acquisition agency, helping our clients attract and retain loyal customers.” Source: RevenueBase Database · checked Sep 21, 2026
15	T-Roc	Partial evidence	Coral Gables, FL, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,135 contacts →
	Partial evidence “The Revenue Optimization Companies (T-ROC) is home to four sales solutions companies that enable clients to fulfill all of their sales performance needs.” Source: RevenueBase Database · checked Sep 21, 2026
16	Almeida Krüger	Indirect evidence	Curitiba, BrazilHQ checked Sep 21, 2026	1,001-5,000	1,131 contacts →
	Indirect evidence “Com mais de 40 anos de história, a Almeida Krüger consolida-se como a maior empresa de força de vendas externas no ramo bancário especializada no mercado de conta corrente e…” Source: RevenueBase Database · checked Sep 21, 2026
17	crystel.co	Indirect evidence	Amman, JordanHQ checked Sep 21, 2026	1,001-5,000	1,128 contacts →
	Indirect evidence “Crystel emerged as a leading Outsourcing Service Provider (OSP) since its establishment in Jordan in early 2007.” Source: RevenueBase Database · checked Sep 21, 2026
18	B2s Business Support Services	Indirect evidence	Gennevilliers Cedex, FranceHQ checked Sep 21, 2026	10001+	978 contacts →
	Indirect evidence “Expert de la relation client depuis 1996, b2s est le N°1 de l’externalisation de votre relation client en qualité délivrée.” Source: RevenueBase Database · checked Sep 21, 2026
19	Rewardsco	Indirect evidence	Durban, South AfricaHQ checked Sep 21, 2026	1,001-5,000	917 contacts →
	Indirect evidence “Our People.” Source: RevenueBase Database · checked Sep 21, 2026
20	Inktel Contact Center Solutions	Indirect evidence	Doral, FL, United StatesHQ checked Sep 21, 2026	1,001-5,000	902 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
21	Answernet	Indirect evidence	Horsham, PA, United StatesHQ checked Sep 21, 2026	501-1,000	883 contacts →
	Indirect evidence “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!” Source: RevenueBase Database · checked Sep 21, 2026
22	CBE Companies	Indirect evidence	Cedar Falls, IA, United StatesHQ checked Sep 21, 2026	1,001-5,000	877 contacts →
	Indirect evidence “CBE Companies is the parent organization of CBE Customer Solutions and CBE Group.” Source: RevenueBase Database · checked Sep 21, 2026
23	Horatio	Indirect evidence	New York, United StatesHQ checked Sep 21, 2026	1,001-5,000	860 contacts →
	Indirect evidence “Horatio is a premier, tech-enabled outsourcing partner helping ambitious companies scale customer experience and complex business operations without compromising quality…” Source: RevenueBase Database · checked Sep 21, 2026
24	Memoryblue	Indirect evidence	Tysons, VA, United StatesHQ checked Sep 21, 2026	501-1,000	825 contacts →
	Indirect evidence “memoryBlue is the go-to partner for revenue leaders in B2B Tech looking to grow their pipeline engine.” Source: RevenueBase Database · checked Sep 21, 2026
25	Dash BPO	Indirect evidence	United StatesHQ checked Sep 21, 2026	1,001-5,000	814 contacts →
	Indirect evidence “DASH BPO, LLC is a global leader in delivering best-in-class first party solutions for its strategic partners.” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: outbound sales organizations. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names outbound sales organizations.
Partial evidence: Its own public description names part of outbound sales organizations, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name outbound sales organizations. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 15,304 outbound sales organizations worldwide

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Outbound sales organizations worldwide at a glance

As of Sep 21, 2026

9.0%Verified-email coverage

15.9Average contacts per company

11-50Median size (employees)

2.2%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

7,272

11-50

4,900

51-200

2,113

201-500

628

501-1,000

200

1,001-5,000

120

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among outbound sales organizations, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for outbound sales organizations are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “outbound sales organizations”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names outbound sales organizations), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among outbound sales organizations, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 21,811 across the full list. 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 21, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Outbound sales organizations by location

60 lists · largest first

Every Outbound sales organizations list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names outbound sales organizations, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many outbound sales organizations are there worldwide?

RevenueBase identified 15,304 outbound sales organizations worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Ienergizer, headquartered in Noida, tops this list with the largest team on record.

Which country has the most outbound sales organizations?

The United States leads with 3,200 companies, followed by India (1,334) and the United Kingdom (1,024). Every outbound sales organizations list by country and city is linked on this page.

Which city has the most outbound sales organizations?

London leads with 331 headquartered companies, followed by Pune (277) and New York (148).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 21,811 verified decision-maker contacts tracked across these 15,304 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 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 Smart Search, 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.