Company lists · Data refreshed September 2026
Top 25 Email encryption companies worldwide
RevenueBase identified 476 email encryption companies worldwide as of September 2026 and tracks 5,390 professional contacts across them, including 1,408 with verified work emails. The United States is the largest market and Berlin the largest hub.
This list covers email encryption 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 September 19, 2026. Country and city lists for email encryption 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 email encryption companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 249 contacts → | ||||
Indirect evidence “KATIM is a leader in the development of innovative secure communication products and solutions for governments and businesses.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 223 contacts → | ||||
Indirect evidence “Virtru is a global leader in data privacy and protection.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 200 contacts → | ||||
Partial 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 Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 144 contacts → | ||||
Indirect evidence “FTAPI #Secure Data Workflow Platform FTAPI is the integrated platform for the simple and flexible implementation, centralization and automation of sensitive data workflows.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 118 contacts → | ||||
Indirect evidence “DIGITAL14 is a leader in the development of innovative secure communication products and solutions for governments and businesses.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 86 contacts → | ||||
Partial evidence “Zivver is the all-in-one email security solution provider for managing and eliminating evolving risk – whether it’s human error, cyber threats, or data compliance.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 78 contacts → | ||||
Partial evidence “Echoworx protects the privacy of people and businesses throughout the world by making email data protection easier.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 76 contacts → | ||||
Indirect evidence “Cryptomathic helps businesses and governments to deliver trust and confidence in the digital world.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 67 contacts → | ||||
Partial evidence “PreVeil makes encryption usable for CMMC & ITAR compliance, business and personal use.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 66 contacts → | ||||
Indirect evidence “Zextras develops sovereign digital collaboration solutions trusted by 120M+ users worldwide, built on over 25 years of open-source innovation.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 64 contacts → | ||||
Indirect evidence “procilon - Technology for IT Security & Data Protection.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 62 contacts → | ||||
Indirect evidence “XMedius is a global leader in the field of enterprise communications solutions.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 61 contacts → | ||||
Partial evidence “Paubox is a leader in HIPAA compliant email security for healthcare.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 49 contacts → | ||||
Partial evidence “DataLocker is the leading provider of advanced encryption solutions.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 45 contacts → | ||||
Indirect evidence “Uma marca forte, com a única missão de proteger sua empresa sempre.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 45 contacts → | ||||
Indirect evidence “Desenvolvimento de soluções de segurança para internet de empresas: e-mail, web, firewall e MSN” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 44 contacts → | ||||
Partial evidence “Mailprotector has built email security for the MSP channel for over 25 years on a fundamentally different premise: remove the conditions that create problems rather than defend…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 41 contacts → | ||||
Indirect evidence “SendSafely operates a zero knowledge, end-to-end encrypted file exchange platform.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 40 contacts → | ||||
Partial evidence “Advanced three-layer, identity based encryption ensures your data and communications stay protected, inside and outside your network.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 39 contacts → | ||||
Partial evidence “Libraesva secures email communications for organisations, helping them eliminate email borne threats, preserve email data and provide an environment for their people to…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 34 contacts → | ||||
Indirect evidence “ECOS is an owner-managed business and specialized in the software development of IT security solutions.we connect IT stands for solutions providing employees of public…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 34 contacts → | ||||
Partial evidence “AxCrypt is an award-wining startup company providing strong and simple encryption software.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 33 contacts → | ||||
Partial evidence “Cellopoint is a leader in next-generation email security solutions, using AI-based technology to protect users against a wide range of threats, from spam and viruses to advanced…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 33 contacts → | ||||
Indirect evidence “AIR Co, Ltd.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 32 contacts → | ||||
Partial evidence “Topsec is a leading provider of cloud based managed email security solutions.” Source: RevenueBase Database · checked Sep 19, 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: email encryption 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 email encryption companies.
- Partial evidence
- Its own public description names part of email encryption companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name email encryption 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 476 email encryption companies worldwide
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Email encryption companies worldwide at a glance
As of Sep 19, 2026Companies by employee count
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 email encryption 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
- Every country. Country and city lists for email encryption companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “email encryption 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 email encryption 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 email encryption 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, 1,408 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 19, 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.
Email encryption companies by location
2 lists · largest firstEvery Email encryption companies 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 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 email encryption 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 email encryption companies are there worldwide?
RevenueBase identified 476 email encryption companies 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?
KATIM, headquartered in Worldwide, tops this list with the largest team on record.
Which country has the most email encryption companies?
The United States leads with 105 companies, followed by Germany (60). Every email encryption companies list by country and city is linked on this page.
Which city has the most email encryption companies?
Berlin leads with 6 headquartered companies, followed by Hannover (6) and Toronto (6).
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 1,408 verified decision-maker contacts tracked across these 476 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 19, 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.