ProtonMail /
ios-mail
Proton Mail iOS is the official mobile client for Proton, providing end-to-end encrypted email communication and secure inbox management.
Overview
The Proton Mail iOS app brings secure, end-to-end encrypted emailing directly to Apple devices. By performing all cryptographic decryption on the client-side, the app ensures that your messages remain completely unreadable to third parties, server administrators, or Proton itself during transit and storage. It features standard mobile email patterns, supporting folders, labels, immediate search, and biometric application lock.
Its interface is highly polished, looking and behaving like standard commercial email applications while enforcing rigorous security protocols. Sending encrypted emails to non-Proton recipients is managed seamlessly via password-protected secure web links. The primary consideration is that search indexing is limited to local email subjects unless you enable secure local body indexing within the app configurations, which consumes additional system storage. For privacy-centric email communication, Proton Mail is the gold standard.
Key topics
- protonmail
- secure-email
- encryption-app
- privacy-mail
- ios-app
Getting started
Installation steps vary depending on how a project is packaged, so the most reliable source is always the official README. As a starting point:
How it compares
Here is how this project sits alongside a few other tools in the same category:
Questions about this project
- What is ios-mail?
- The Proton Mail iOS app brings secure, end-to-end encrypted emailing directly to Apple devices. By performing all cryptographic decryption on the client-side, the app ensures that your messages remain completely unreadable to third parties, server administrators, or Proton itself during transit and storage. It features standard mobile email patterns, supporting folders, labels, immediate search, and biometric application lock.
- What license does ios-mail use?
- GPL-3.0
- How popular is ios-mail on GitHub?
- ios-mail has roughly 3.1k stars and 420 forks on GitHub as of the latest data.
- Is ios-mail actively maintained?
- This repository has been updated recently, which is generally a good sign of active maintenance.
- What language is ios-mail written in?
- ios-mail is written primarily in Swift.
Repository info
| Owner | ProtonMail |
|---|---|
| Primary language | Swift |
| License | GPL-3.0 |
| Created | July 16, 2026 |
| Last updated | July 16, 2026 |