Best Email Encryption Software in 2026
Updated
In short: Lockbin is ranked #1 of 28 as of 2 October 2026, ahead of gpg4o and FlowCrypt. The best-ranked option with a free plan is gpg4o. The lowest first paid tier on this page is Cryptshare.express at €0.42/mo.
Email encryption software gives you options for sending messages with controls for delivery and recipient access. Compared on secure delivery and recipient verification, the entries also differ in attachment limits and message expiry. Gmail and Outlook integration can help you assess compatibility with the email services you use, while admin access controls are another point to compare. Free-plan availability and the paid starting point add cost context. FlowCrypt and Mailvelope begin the ranking, followed by DataMotion Secure Email Exchange and c.Email. SecureMyEmail, Virtru Email Encryption, Lockbin, and MailHippo are also among the first entries. Match these delivery, access, and integration details to the messages you need to protect.
28 email encryption software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
#1 Lockbin Top pick · 7.3 Free plan · $10/mo
#2 gpg4o Runner-up · 6.9 Free plan · €99.95/mo
#3 FlowCrypt Also great · 6.8 Free plan · Free
- Free planFree trial LinuxmacOSWebWindows
- Free plan
- Yes
- Paid from
- 10 /user/mo
- Secure delivery
- link
- Recipient verification
- password
- Message expiry
- Yes
- Attachment limit
- 100 MB
RecognisedDocumentedFree planPlatforms$10/mofirst paid tier About LockbinVisit site - Free planFree trial Windows
- Free plan
- Yes
- Secure delivery
- attachment
- Recipient verification
- identity
- Message expiry
- No
RecognisedDocumentedFree planPlatforms€99.95/mofirst paid tier About gpg4oVisit site - Free plan extension
- Free plan
- Yes
- Secure delivery
- link
- Recipient verification
- password
- Message expiry
- Yes
- Attachment limit
- 25 MB
RecognisedDocumentedFree planPlatforms - Free plan WindowsmacOSiOSAndroid
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Free plan extension
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - AndroidiOSWebWindows
- Secure delivery
- portal
- Message expiry
- Yes
RecognisedDocumentedFree planPlatforms - Free trial AndroidapiiOSWeb
- Free plan
- Yes
- Secure delivery
- portal
- Recipient verification
- identity
- Message expiry
- Yes
- Attachment limit
- 50 MB
RecognisedDocumentedFree planPlatforms - WebWindowsmacOSiOSAndroid
- Free plan
- No
- Secure delivery
- link
- Recipient verification
- identity
- Message expiry
- Yes
- Attachment limit
- 150 MB
RecognisedDocumentedFree planPlatforms$119/mofirst paid tier About Virtru Email EncryptionVisit site - WebWindowsmacOS
- Secure delivery
- attachment
- Recipient verification
- password
- Message expiry
- Yes
- Attachment limit
- 10 MB
RecognisedDocumentedFree planPlatforms - Windows
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms$2.50/mofirst paid tier About Encryptomatic OpenPGPVisit site - Free trial apiWebWindows
- Free plan
- No
- Paid from
- 4.95 /user/mo
- Secure delivery
- portal
- Recipient verification
- password
- Message expiry
- Yes
- Attachment limit
- 50 MB
RecognisedDocumentedFree planPlatforms$4.95/mofirst paid tier About MailHippoVisit site - Free trial extensionWeb
- Free plan
- Yes
- Secure delivery
- attachment
- Recipient verification
- identity
- Attachment limit
- 50 MB
RecognisedDocumentedFree planPlatforms€3/mofirst paid tier About MailvelopeVisit site - WebWindowsmacOS
- Secure delivery
- portal
- Message expiry
- Yes
RecognisedDocumentedFree planPlatforms - Windows
- Free plan
- Yes
- Secure delivery
- attachment
- Recipient verification
- identity
RecognisedDocumentedFree planPlatforms - Windows
- Free plan
- Yes
- Secure delivery
- attachment
- Recipient verification
- password
RecognisedDocumentedFree planPlatforms$79.99/mofirst paid tier About PDF PostmanVisit site - Web
- Secure delivery
- link
- Recipient verification
- password
- Message expiry
- Yes
RecognisedDocumentedFree planPlatforms - WebLinux
- Free plan
- Yes
- Secure delivery
- link
- Message expiry
- Yes
RecognisedDocumentedFree planPlatforms -
- Free plan
- Yes
- Secure delivery
- portal
- Recipient verification
- identity
- Message expiry
- Yes
- Attachment limit
- 50 MB
RecognisedDocumentedFree planPlatforms - apiself-hostedWebWindows
- Free plan
- No
RecognisedDocumentedFree planPlatforms$119/mofirst paid tier About Virtru Data Security PlatformVisit site - Web
- Free plan
- No
- Secure delivery
- link
- Recipient verification
- password
- Message expiry
- No
- Attachment limit
- 150 MB
RecognisedDocumentedFree planPlatforms$29/mofirst paid tier About Paubox Email EncryptionVisit site -
- Recipient verification
- password
- Message expiry
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- No
- Secure delivery
- portal
- Recipient verification
- password
- Message expiry
- Yes
- Attachment limit
- 10,240 MB
RecognisedDocumentedFree planPlatforms€0.42/mofirst paid tier About Cryptshare.expressVisit site - LinuxmacOSWindows
- Recipient verification
- password
- Message expiry
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- No
- Paid from
- 2.4 /user/mo
RecognisedDocumentedFree planPlatforms$2.40/mofirst paid tier About KnowBe4Visit site -
- Secure delivery
- portal
- Recipient verification
- password
- Message expiry
- Yes
RecognisedDocumentedFree planPlatforms
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which email encryption software is ranked first on Everything Xiaomi?
Lockbin is ranked #1 of 28 with a score of 7.3. gpg4o is second and FlowCrypt third.
How many of these have a free plan?
5 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Cryptshare.express has the lowest first paid tier we found: €0.42/mo.
How is this list ranked?
Ranked on what each maker publishes: documentation depth, a free tier and the platforms it runs on. Paid placements never change a rank.