Company lists · Data refreshed August 2026
Top 25 Cloud email security companies worldwide
RevenueBase identified 1,117 cloud email security companies worldwide as of August 2026 and tracks 53,582 professional contacts across them, including 24,117 with verified work emails and 12,698 with mobile numbers. The United States is the largest market and London the largest hub.
This list covers cloud email security companies 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 August 31, 2026. Country and city lists for cloud email security companies 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.
The 25 largest cloud email security companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 11,179 contacts → | ||||
Strong evidence “Your backstage pass to the most epic cybersecurity solutions on the market for Endpoint, Network, Data and Cloud security.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 2 | 10,059 contacts → | ||||
Strong evidence “CrowdStrike (Nasdaq: CRWD), a global cybersecurity leader, has redefined modern security with the world’s most advanced cloud-native platform for protecting critical areas of…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 3 | 4,381 contacts → | ||||
Partial evidence “Rubrik (NYSE: RBRK), the Security and AI company, operates at the intersection of data protection, cyber resilience and enterprise AI acceleration.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 4 | 3,042 contacts → | ||||
Strong evidence “Qualys, Inc.(NASDAQ: QLYS) is a leading provider of disruptive cloud-based security, compliance and IT solutions with more than subscription customers worldwide, including a…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 5 | 3,025 contacts → | ||||
Strong evidence “Netskope (NASDAQ: NTSK), a leader in modern security and networking for the cloud and AI era, addresses the needs of both security and networking teams by providing optimized…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 6 | 2,528 contacts → | ||||
Partial evidence “Wiz, now part of Google Cloud, protects everything you build and run.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 7 | 2,108 contacts → | ||||
Indirect evidence “Barracuda is a leading global cybersecurity company providing complete protection against complex threats for all size business.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 8 | 647 contacts → | ||||
Strong evidence “Skyhigh Security protects organizations with cloud-native security solutions that are both data-aware and simple to use.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 9 | 474 contacts → | ||||
Strong evidence “Hornetsecurity is a leading global provider of next-generation cloud-based security, compliance, backup, and security awareness solutions that help companies and organizations of…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 10 | 442 contacts → | ||||
Strong evidence “Orca Security is the pioneer of agentless cloud security, and is trusted by hundreds of enterprises globally.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 11 | 284 contacts → | ||||
Partial evidence “NSFOCUS is an iconic internet and application security company with over 20 years of proven industry experience.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 12 | 238 contacts → | ||||
Partial evidence “Met de Secure Managed Cloud Services van Solvinity ben je verzekerd van een veilige basis voor jouw IT.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 13 | 237 contacts → | ||||
Strong evidence “Sublime is the new standard for email security.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 14 | 209 contacts → | ||||
Indirect evidence “Netdata is a leading global cybersecurity services partner with more than 200 certified engineers and over 1,500 certifications, widely recognized as a partner of Palo Alto…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 15 | 200 contacts → | ||||
Strong evidence “Zix, an OpenText company, is a leader in email security and helps organizations overcome their greatest digital transformation challenges by providing a secure, modern workplace.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 16 | 199 contacts → | ||||
Partial evidence “Webroot, an OpenText company, was the first to harness the cloud and artificial intelligence to stop zero-day threats in real time.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 17 | 165 contacts → | ||||
Strong evidence “IRONSCALES is the leader in AI-powered email security protecting over global organizations from advanced phishing threats.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 18 | 153 contacts → | ||||
Partial evidence “Alliance entre #Thales, leader français de la #cybersécurité, et #Google, leader mondial du #Cloud proposant les meilleures technologies au service de l’#innovation, S3NS a pour…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 19 | 127 contacts → | ||||
Partial evidence “EasyDMARC is your one-stop platform that secures your email domain infrastructure and boosts email deliverability for your peace of mind.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 20 | 124 contacts → | ||||
Strong evidence “We Ankor, member of the Hilan Group, is an experienced company of experts, leading in computing infrastructure and information and cloud security.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 21 | 115 contacts → | ||||
Partial evidence “OTAVA is your secure & compliant multi-cloud expert.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 22 | 114 contacts → | ||||
Strong evidence “AppRiver, an OpenText company, company, is a channel-first provider of cloud-enabled security and productivity services, with a 4,500-strong reseller community that protects…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 23 | 111 contacts → | ||||
Indirect evidence “Securepoint GmbH, from the Hanseatic city of Lüneburg, is the market leader in the development of professional “Unified Threat Management” solutions in Germany.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 24 | 108 contacts → | ||||
Partial evidence “Valimail, now a DigiCert company, is the industry leader in redefining email authentication for the zero-trust era.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 25 | 105 contacts → | ||||
Strong evidence “AUCyber is a leading Australian cyber security and secure cloud provider, specialising in supporting businesses and Governments with the latest cloud infrastructure, backup and…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
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: cloud email security companies. 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 cloud email security companies.
- Partial evidence
- Its own public description names part of cloud email security companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name cloud email security companies. 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 1,117 cloud email security companies worldwide
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Cloud email security companies worldwide at a glance
As of Aug 31, 2026Companies by employee count
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 cloud email security companies, 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
- 12 countries, largest first: the United States, India, the United Kingdom, Brazil, Germany, Canada, France, Australia, the Netherlands, Israel and 2 more. Country and city lists for cloud email security companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “cloud email security companies”. 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 cloud email security companies), 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 cloud email security companies, 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, 24,117 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 between August 31, 2026 and September 14, 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.
Cloud email security companies by location
13 lists · largest firstEvery Cloud email security companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Cloud email security companies based in the United States458
- Cloud email security companies based in India141
- Cloud email security companies based in the United Kingdom110
- Cloud email security companies based in Brazil76
- Cloud email security companies based in Germany69
- Cloud email security companies based in Canada56
- Cloud email security companies based in France41
- Cloud email security companies based in Australia39
- Cloud email security companies based in the Netherlands36
- Cloud email security companies based in Israel35
- Cloud email security companies based in South Africa30
- Cloud email security companies based in the United Arab Emirates26
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 cloud email security companies, 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 cloud email security companies are there worldwide?
RevenueBase identified 1,117 cloud email security companies worldwide as of August 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?
Symantec, headquartered in San Jose, tops this list with the largest team on record.
Which country has the most cloud email security companies?
The United States leads with 458 companies, followed by India (141) and the United Kingdom (110). Every cloud email security companies list by country and city is linked on this page.
Which city has the most cloud email security companies?
London leads with 45 headquartered companies, followed by Sao Paulo (23) and New York (22).
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 24,117 verified decision-maker contacts tracked across these 1,117 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between August 31, 2026 and September 14, 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.