ElectronMail
An unofficial Proton Mail desktop client with multiple accounts, offline storage and full-text search.GetGPL-3.0
Proton Mail Bridge
Runs a local IMAP and SMTP server so Apple Mail, Outlook or Thunderbird can use an encrypted Proton Mail account.
GPL-3.0 · Downloads from proton.me
- License
- GPL-3.0
- Open source
- Source
- GitHub
- ProtonMail
- Verified
- 2026
About Proton Mail Bridge
Proton Mail Bridge lets a regular desktop mail app work with a Proton Mail account. It runs in the background, signs in to Proton, and offers your mailbox to clients such as Apple Mail, Outlook or Thunderbird through a local IMAP and SMTP server. Messages are decrypted and encrypted on your Mac, and the client connects with a separate password generated by Bridge rather than your Proton login.
The download is free, but Bridge only works with a paid Proton plan that includes Proton Mail. Proton officially supports it on macOS 15 and macOS 26 on Apple silicon and Intel Macs. Mail fetched by your client is stored locally, so the disk space it uses depends on the size of your mailbox.
Information
- Source code
- ProtonMail/proton-bridge
- License
- GPL-3.0
- Website
- proton.me
- Download
- proton.me
- Homebrew
- proton-mail-bridge
- Category
- Privacy & security
- Evidence checked
- Tags
OpenMacApps links to each project’s official download. Check its release notes for macOS version and Apple silicon support. The verification date records our license and source review, not a security audit.
Sources and image credits
- github.com/ProtonMail/proton-bridge
- github.com/ProtonMail/proton-bridge/blob/master/LICENSE
- proton.me/mail/bridge
- github.com/ProtonMail/proton-bridge/releases
- proton.me/support/operating-systems-supported-bridge
- icon.png: Proton AG. GPL-3.0; Proton trademarks retained.
License and artwork notices
For the Developer
Link to this page from your README with a badge.
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