Best gpg4o Alternatives in 2026
Updated
20 platforms from email encryption software ranked against gpg4o on the same published basis.
- 1gpg4o vs DataMotion Secure Email Exchange
- 2gpg4o vs MailHippo
- 3gpg4o vs Trustifi Outbound Shield
- 4gpg4o vs Virtru Data Security Platform
- 5gpg4o vs FlowCrypt
- 7gpg4o vs c.Email
- 8gpg4o vs Lockbin
- 9gpg4o vs Mailvelope
- 10gpg4o vs SecureMyEmail
- 11gpg4o vs Encryptomatic OpenPGP
- 12gpg4o vs Gpg4win
- 13gpg4o vs PDF Postman
- 14gpg4o vs Send It Secure
- 15gpg4o vs OpenText Core Email Message Privacy
- 16gpg4o vs Proofpoint Email DLP and Encryption
- 17gpg4o vs RMail
- 18gpg4o vs Mimecast Secure Messaging
- 19gpg4o vs Secure Message
- 20gpg4o vs Sophos Secure Message
- 21gpg4o vs Virtru Email Encryption
gpg4o alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | DataMotion Secure Email Exchange | 6.9 | No | — | Android, API, iOS, Web |
| 2 | MailHippo | 6.8 | No | $4.95/mo | API, Web, Windows |
| 3 | Trustifi Outbound Shield | 6.7 | No | — | API, Browser, Mac, Web, Windows |
| 4 | Virtru Data Security Platform | 6.7 | No | $119/mo | API, self-hosted, Web, Windows |
| 5 | FlowCrypt | 6.0 | Free plan | Free | Browser |
| 7 | c.Email | 5.9 | Free plan | Free | Browser |
| 8 | Lockbin | 5.9 | Free plan | $10/mo | Linux, Mac, Web, Windows |
| 9 | Mailvelope | 5.6 | No | €3/mo | Browser, Web |
| 10 | SecureMyEmail | 5.6 | Free plan | Free | Windows, Mac, iOS, Android |
| 11 | Encryptomatic OpenPGP | 5.5 | No | $2.50/mo | Windows |
| 12 | Gpg4win | 5.5 | No | — | Windows |
| 13 | PDF Postman | 5.5 | No | $79.99/mo | Windows |
| 14 | Send It Secure | 5.5 | No | — | — |
| 15 | OpenText Core Email Message Privacy | 5.4 | No | — | Web |
| 16 | Proofpoint Email DLP and Encryption | 5.4 | No | — | Android, iOS, Web, Windows |
| 17 | RMail | 5.4 | No | — | Web, Windows, Mac |
| 18 | Mimecast Secure Messaging | 5.3 | No | — | Web, Windows, Mac |
| 19 | Secure Message | 5.3 | No | — | Web, Linux |
| 20 | Sophos Secure Message | 5.3 | No | — | — |
| 21 | Virtru Email Encryption | 5.3 | No | $119/mo | Web, Windows, Mac, iOS, Android |
The sponsored alternative slot on this page is labelled Sponsored.
Questions about gpg4o alternatives
What is the best alternative to gpg4o?
DataMotion Secure Email Exchange, number 1 in email encryption software with a score of 6.9 out of 10. The others here: MailHippo, Trustifi Outbound Shield, Virtru Data Security Platform and 16 more.
What is the best free alternative to gpg4o?
FlowCrypt is the best-ranked alternative with a free plan. 4 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.