Company lists · Data refreshed November 2026
Top 25 Corporate mailbox providers worldwide
RevenueBase identified 551 company matches for corporate mailbox providers worldwide as of November 2026 and tracks 5,216 professional contacts across them, including 301 with verified work emails. The United States is the largest market and Mumbai the largest hub.
This list covers company matches for corporate mailbox providers 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 November 6, 2026. Country and city lists for corporate mailbox providers 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 corporate mailbox providers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 296 contacts → | ||||
Exact match “Fastmail is email, just better!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 159 contacts → | ||||
Exact match “Titan is an email suite built specifically for professionals and small businesses.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 127 contacts → | ||||
Exact match “iPostal1 is the leading virtual address and digital mailbox for small business and business registration offering customers a real street address in any of our more than 4,250…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 54 contacts → | ||||
Exact match “Business Email Accounts, Calendaring, Contacts and Collaboration Services for Your Business from BlueTie.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 39 contacts → | ||||
Exact match “Topsec is a leading provider of cloud based managed email security solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 38 contacts → | ||||
Exact match “Mit einem Volumen von mehr als einer halben Milliarde briefkastenfähiger Sendungen pro Jahr sind wir Deutschlands größter alternativer Briefdienstleister und Spezialist für den…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 38 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 36 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 27 contacts → | ||||
Exact match “At Axigen, we work with communication service providers around the world to improve their customer's loyalty, increase their brand stickiness, and guarantee data sovereignty for…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 27 contacts → | ||||
Exact match “Hosting, Dominios, Servidores y Correos Electrónicos Corporativos” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 26 contacts → | ||||
Exact match “INVIDIA brings secure enterprise grade and competitive Cloud services to small businesses through strong international technology partnerships.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 25 contacts → | ||||
Exact match “Bagful Solutions is a leading provider of Internet services and has been in business for ten years.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 23 contacts → | ||||
Exact match “Tizzy® Mail users will not have to worry for issues like delayed emails or not receiving incoming emails, spam mail issue, IP blacklisting, DNS-related issues, Email spoofing…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 22 contacts → | ||||
Exact match “SMS is a leading managed cloud solutions provider offering Microsoft Office 365, Microsoft Azure, along with ancillary back up, cybersecurity and professional services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 15 contacts → | ||||
Exact match “Spambrella is a Worldwide email content control security ‘software as a service’ (SaaS) provider.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 14 contacts → | ||||
Exact match “Surviving in today’s business world often boils down to your ability to adapt rapidly to change, something that’s not always possible with an in-house IT infrastructure.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 13 contacts → | ||||
Exact match “Reliable and Secure email hosting services for SMB and Enterprise.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 13 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 12 contacts → | ||||
Exact match “Mail2World designs, delivers and supports a technology-leading and award-winning suite of carrier-class, Web-based email messaging and collaboration services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 12 contacts → | ||||
Exact match “Yukthi Systems is a Bangalore based company, providing industry leading email services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 11 contacts → | ||||
Exact match “Leading provider of email continuity, archiving, e-discovery, security and notification services delivered using SaaS model.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 9 contacts → | ||||
Exact match “Down-to earth Cloud services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 9 contacts → | ||||
Exact match “Clean Email helps you manage your mailbox overloaded with unread and unwanted emails more efficiently, while keeping your data safe and respecting your privacy.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 9 contacts → | ||||
Exact match “The only mailbox infrastructure where deliverability just works.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 9 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 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 “corporate mailbox providers”. 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 551 corporate mailbox providers worldwide
See the full list, filter by size, metro and specialty, and access 301 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Corporate mailbox providers worldwide at a glance
As of Nov 6, 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 corporate mailbox providers are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “corporate mailbox providers” 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 301 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 November 6, 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.
Corporate mailbox providers by location
3 lists · largest firstEvery Corporate mailbox providers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 “corporate mailbox providers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many corporate mailbox providers are there worldwide?
RevenueBase identified 551 company matches for corporate mailbox providers worldwide as of November 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?
Fastmail tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most corporate mailbox providers?
The United States leads with 99 companies, followed by India (57) and the United Kingdom (28). Every corporate mailbox providers list by country and city is linked on this page.
Which city has the most corporate mailbox providers?
Mumbai leads with 10 company records, followed by London (7) and Belo Horizonte (6).
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 301 professional contacts with verified work emails tracked across these 551 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 November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 551 corporate mailbox providers worldwide. Start with a free account, no credit card.
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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 corporate mailbox providers worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 551 matching company records for corporate mailbox providers worldwide, with 5,216 tracked contacts and 301 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: November 6, 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 corporate mailbox providers 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 |  Fastmailfastmail.comHQ: Melbourne, AustraliaReported employees: Not recorded | Melbourne, Australia | Not recorded | Exact match | 296 contacts → |
“Fastmail is email, just better!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Titan Emailtitan.emailHQ: Mumbai, IndiaReported employees: 51-200 | Mumbai, India | 51-200 | Exact match | 159 contacts → |
“Titan is an email suite built specifically for professionals and small businesses.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Ipostal1ipostal1.comHQ: Suffern, NY, United StatesReported employees: 51-200 | Suffern, NY, United States | 51-200 | Exact match | 127 contacts → |
“iPostal1 is the leading virtual address and digital mailbox for small business and business registration offering customers a real street address in any of our more than 4,250…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Bluetie, INCbluetie.comHQ: Rochester, NY, United StatesReported employees: 11-50 | Rochester, NY, United States | 11-50 | Exact match | 54 contacts → |
“Business Email Accounts, Calendaring, Contacts and Collaboration Services for Your Business from BlueTie.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Topsec Cloud Solutionstopsec.comHQ: Sandyford, IrelandReported employees: 11-50 | Sandyford, Ireland | 11-50 | Exact match | 39 contacts → |
“Topsec is a leading provider of cloud based managed email security solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  DVSdeutscherversandservice.deHQ: Ratingen, GermanyReported employees: 201-500 | Ratingen, Germany | 201-500 | Exact match | 38 contacts → |
“Mit einem Volumen von mehr als einer halben Milliarde briefkastenfähiger Sendungen pro Jahr sind wir Deutschlands größter alternativer Briefdienstleister und Spezialist für den…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Boxitoboxito.com.mx HQ: MexicoReported employees: 11-50 | Mexico | 11-50 | Exact match | 38 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 8 | HQ: IndiaReported employees: 11-50 | India | 11-50 | Exact match | 36 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 9 |  Axigen Messagingaxigen.comHQ: Bucharest, RomaniaReported employees: 11-50 | Bucharest, Romania | 11-50 | Exact match | 27 contacts → |
“At Axigen, we work with communication service providers around the world to improve their customer's loyalty, increase their brand stickiness, and guarantee data sovereignty for…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Colombia Hostingcolombiahosting.com.coHQ: Cali, ColombiaReported employees: 11-50 | Cali, Colombia | 11-50 | Exact match | 27 contacts → |
“Hosting, Dominios, Servidores y Correos Electrónicos Corporativos” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Invidiainvidia.com.auHQ: Canberra, AustraliaReported employees: 51-200 | Canberra, Australia | 51-200 | Exact match | 26 contacts → |
“INVIDIA brings secure enterprise grade and competitive Cloud services to small businesses through strong international technology partnerships.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Bagful International LLPbagful.netHQ: Chandigarh, IndiaReported employees: 11-50 | Chandigarh, India | 11-50 | Exact match | 25 contacts → |
“Bagful Solutions is a leading provider of Internet services and has been in business for ten years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Tizzy Cloud Computing Private Limitedtizzycloud.comHQ: Mumbai, IndiaReported employees: 11-50 | Mumbai, India | 11-50 | Exact match | 23 contacts → |
“Tizzy® Mail users will not have to worry for issues like delayed emails or not receiving incoming emails, spam mail issue, IP blacklisting, DNS-related issues, Email spoofing…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  SMSsmsbusinesscloud.comHQ: Manchester, United KingdomReported employees: 11-50 | Manchester, United Kingdom | 11-50 | Exact match | 22 contacts → |
“SMS is a leading managed cloud solutions provider offering Microsoft Office 365, Microsoft Azure, along with ancillary back up, cybersecurity and professional services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Spambrellaspambrella.comHQ: Dover, DE, United StatesReported employees: 51-200 | Dover, DE, United States | 51-200 | Exact match | 15 contacts → |
“Spambrella is a Worldwide email content control security ‘software as a service’ (SaaS) provider.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Massive ITmassiveit.comHQ: Tampa, CO, United StatesReported employees: 201-500 | Tampa, CO, United States | 201-500 | Exact match | 14 contacts → |
“Surviving in today’s business world often boils down to your ability to adapt rapidly to change, something that’s not always possible with an in-house IT infrastructure.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Duocircleduocircle.comHQ: San Diego, CA, United StatesReported employees: 11-50 | San Diego, CA, United States | 11-50 | Exact match | 13 contacts → |
“Reliable and Secure email hosting services for SMB and Enterprise.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  E.M. Technologies India Pvt. LTDemtindia.comHQ: Ghaziabad, IndiaReported employees: 11-50 | Ghaziabad, India | 11-50 | Exact match | 13 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 19 |  Mail2world, INCmail2world.netHQ: Los Angeles, CA, United StatesReported employees: 51-200 | Los Angeles, CA, United States | 51-200 | Exact match | 12 contacts → |
“Mail2World designs, delivers and supports a technology-leading and award-winning suite of carrier-class, Web-based email messaging and collaboration services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Yukthi Systems Private Limitedyukthi.comHQ: Bangalore, IndiaReported employees: 11-50 | Bangalore, India | 11-50 | Exact match | 12 contacts → |
“Yukthi Systems is a Bangalore based company, providing industry leading email services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Messageonemessageone.comHQ: United StatesReported employees: 51-200 | United States | 51-200 | Exact match | 11 contacts → |
“Leading provider of email continuity, archiving, e-discovery, security and notification services delivered using SaaS model.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  ISP Cloud Services INCispcloudservices.comHQ: Miami, FL, United StatesReported employees: 1-10 | Miami, FL, United States | 1-10 | Exact match | 9 contacts → |
“Down-to earth Cloud services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Clean Emailcleanemail.onelink.meHQ: Santa Barbara, CA, United StatesReported employees: 1-10 | Santa Barbara, CA, United States | 1-10 | Exact match | 9 contacts → |
“Clean Email helps you manage your mailbox overloaded with unread and unwanted emails more efficiently, while keeping your data safe and respecting your privacy.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  sending.acsending.acHQ: United StatesReported employees: 11-50 | United States | 11-50 | Exact match | 9 contacts → |
“The only mailbox infrastructure where deliverability just works.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Shiv Health Foods LLPshiv.co.in HQ: Kota, IndiaReported employees: 11-50 | Kota, India | 11-50 | Exact match | 9 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 25 of 551 company matches
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Corporate mailbox providers: dataset insights
November 6, 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
528 records in the displayed employee bands.
23 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 551 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: November 6, 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 ↗
Corporate mailbox providers by location
3 lists · largest firstEvery Corporate mailbox providers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for corporate mailbox providers?
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 corporate mailbox providers did RevenueBase find worldwide?
The saved snapshot records 551 matching company records, 5,216 tracked contacts and 301 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: November 6, 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
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Cite this list
RevenueBase Data Team. Top 25 corporate mailbox providers worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/corporate-mailbox-providers.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 corporate mailbox providers worldwide
RevenueBase records 551 matching company records for corporate mailbox providers worldwide, with 5,216 tracked contacts and 301 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: November 6, 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 corporate mailbox providers 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 | Fastmailfastmail.com HQ: Melbourne, AustraliaReported employees: Not recorded | Melbourne, Australia | Not recorded | Exact match | 296 contacts → |
“Fastmail is email, just better!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Titan Emailtitan.email HQ: Mumbai, IndiaReported employees: 51-200 | Mumbai, India | 51-200 | Exact match | 159 contacts → |
“Titan is an email suite built specifically for professionals and small businesses.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Ipostal1ipostal1.com HQ: Suffern, NY, United StatesReported employees: 51-200 | Suffern, NY, United States | 51-200 | Exact match | 127 contacts → |
“iPostal1 is the leading virtual address and digital mailbox for small business and business registration offering customers a real street address in any of our more than 4,250…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Bluetie, INCbluetie.com HQ: Rochester, NY, United StatesReported employees: 11-50 | Rochester, NY, United States | 11-50 | Exact match | 54 contacts → |
“Business Email Accounts, Calendaring, Contacts and Collaboration Services for Your Business from BlueTie.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Topsec Cloud Solutionstopsec.com HQ: Sandyford, IrelandReported employees: 11-50 | Sandyford, Ireland | 11-50 | Exact match | 39 contacts → |
“Topsec is a leading provider of cloud based managed email security solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | DVSdeutscherversandservice.de HQ: Ratingen, GermanyReported employees: 201-500 | Ratingen, Germany | 201-500 | Exact match | 38 contacts → |
“Mit einem Volumen von mehr als einer halben Milliarde briefkastenfähiger Sendungen pro Jahr sind wir Deutschlands größter alternativer Briefdienstleister und Spezialist für den…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Boxitoboxito.com.mx HQ: MexicoReported employees: 11-50 | Mexico | 11-50 | Exact match | 38 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 8 | HQ: IndiaReported employees: 11-50 | India | 11-50 | Exact match | 36 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 9 | Axigen Messagingaxigen.com HQ: Bucharest, RomaniaReported employees: 11-50 | Bucharest, Romania | 11-50 | Exact match | 27 contacts → |
“At Axigen, we work with communication service providers around the world to improve their customer's loyalty, increase their brand stickiness, and guarantee data sovereignty for…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Colombia Hostingcolombiahosting.com.co HQ: Cali, ColombiaReported employees: 11-50 | Cali, Colombia | 11-50 | Exact match | 27 contacts → |
“Hosting, Dominios, Servidores y Correos Electrónicos Corporativos” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Invidiainvidia.com.au HQ: Canberra, AustraliaReported employees: 51-200 | Canberra, Australia | 51-200 | Exact match | 26 contacts → |
“INVIDIA brings secure enterprise grade and competitive Cloud services to small businesses through strong international technology partnerships.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Bagful International LLPbagful.net HQ: Chandigarh, IndiaReported employees: 11-50 | Chandigarh, India | 11-50 | Exact match | 25 contacts → |
“Bagful Solutions is a leading provider of Internet services and has been in business for ten years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Tizzy Cloud Computing Private Limitedtizzycloud.com HQ: Mumbai, IndiaReported employees: 11-50 | Mumbai, India | 11-50 | Exact match | 23 contacts → |
“Tizzy® Mail users will not have to worry for issues like delayed emails or not receiving incoming emails, spam mail issue, IP blacklisting, DNS-related issues, Email spoofing…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | SMSsmsbusinesscloud.com HQ: Manchester, United KingdomReported employees: 11-50 | Manchester, United Kingdom | 11-50 | Exact match | 22 contacts → |
“SMS is a leading managed cloud solutions provider offering Microsoft Office 365, Microsoft Azure, along with ancillary back up, cybersecurity and professional services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Spambrellaspambrella.com HQ: Dover, DE, United StatesReported employees: 51-200 | Dover, DE, United States | 51-200 | Exact match | 15 contacts → |
“Spambrella is a Worldwide email content control security ‘software as a service’ (SaaS) provider.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Massive ITmassiveit.com HQ: Tampa, CO, United StatesReported employees: 201-500 | Tampa, CO, United States | 201-500 | Exact match | 14 contacts → |
“Surviving in today’s business world often boils down to your ability to adapt rapidly to change, something that’s not always possible with an in-house IT infrastructure.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Duocircleduocircle.com HQ: San Diego, CA, United StatesReported employees: 11-50 | San Diego, CA, United States | 11-50 | Exact match | 13 contacts → |
“Reliable and Secure email hosting services for SMB and Enterprise.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | E.M. Technologies India Pvt. LTDemtindia.com HQ: Ghaziabad, IndiaReported employees: 11-50 | Ghaziabad, India | 11-50 | Exact match | 13 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 19 | Mail2world, INCmail2world.net HQ: Los Angeles, CA, United StatesReported employees: 51-200 | Los Angeles, CA, United States | 51-200 | Exact match | 12 contacts → |
“Mail2World designs, delivers and supports a technology-leading and award-winning suite of carrier-class, Web-based email messaging and collaboration services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Yukthi Systems Private Limitedyukthi.com HQ: Bangalore, IndiaReported employees: 11-50 | Bangalore, India | 11-50 | Exact match | 12 contacts → |
“Yukthi Systems is a Bangalore based company, providing industry leading email services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Messageonemessageone.com HQ: United StatesReported employees: 51-200 | United States | 51-200 | Exact match | 11 contacts → |
“Leading provider of email continuity, archiving, e-discovery, security and notification services delivered using SaaS model.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | ISP Cloud Services INCispcloudservices.com HQ: Miami, FL, United StatesReported employees: 1-10 | Miami, FL, United States | 1-10 | Exact match | 9 contacts → |
“Down-to earth Cloud services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Clean Emailcleanemail.onelink.me HQ: Santa Barbara, CA, United StatesReported employees: 1-10 | Santa Barbara, CA, United States | 1-10 | Exact match | 9 contacts → |
“Clean Email helps you manage your mailbox overloaded with unread and unwanted emails more efficiently, while keeping your data safe and respecting your privacy.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | sending.acsending.ac HQ: United StatesReported employees: 11-50 | United States | 11-50 | Exact match | 9 contacts → |
“The only mailbox infrastructure where deliverability just works.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Shiv Health Foods LLPshiv.co.in HQ: Kota, IndiaReported employees: 11-50 | Kota, India | 11-50 | Exact match | 9 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 25 of 551 company matches
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Corporate mailbox providers: dataset insights
November 6, 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
528 records in the displayed employee bands.
23 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 551 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: November 6, 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 ↗
Corporate mailbox providers by location
3 lists · largest firstEvery Corporate mailbox providers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for corporate mailbox providers?
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 corporate mailbox providers did RevenueBase find worldwide?
The saved snapshot records 551 matching company records, 5,216 tracked contacts and 301 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: November 6, 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.
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Cite this list
RevenueBase Data Team. Top 25 corporate mailbox providers worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/corporate-mailbox-providers.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗