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Fastmail vs Proton Mail

Side-by-side comparison for macOS

Fastmail

7.0
Communication

Email client

Proton Mail

8.0
Security & Privacy

Client for Proton Mail and Proton Calendar

Metric Fastmail Proton Mail
Category Communication Security & Privacy
AI Score 7.0 8.0
30-day Installs 106 525
90-day Installs 356 1.6K
365-day Installs 1.1K 5.8K
Version 1.2.1 1.12.1
Auto-updates Yes Yes
Deprecated No No
GitHub Stars 21
GitHub Forks 6
Open Issues 14
License GPL-3.0
Language Go
Last GitHub Commit 3mo ago
First Seen Oct 13, 2025 Mar 15, 2024

Reviews

Fastmail

Fastmail is a robust macOS email client offering features like masked emails and seamless email migration. It's ideal for users prioritizing privacy and those looking to transition from other services.

Fastmail is an email client designed to manage email accounts with advanced features.

Pros

  • + Supports seamless email migration from services like Gmail
  • + Offers masked email addresses for enhanced privacy
  • + Regular auto-updates ensure the app stays current

Cons

  • - Some users have privacy concerns due to Fastmail's policies
  • - No mentions on Reddit, indicating less community engagement

Proton Mail

Proton Mail is a privacy-focused desktop client for accessing encrypted email and calendar services, ideal for users prioritizing security and anonymity, such as activists and journalists.

Provides a desktop interface for Proton Mail and Proton Calendar services, enabling secure communication and calendar management.

Pros

  • + Strong focus on privacy and security
  • + Supports encrypted email and calendar services
  • + Regular updates and active development
  • + MacOS integration for seamless use
  • + Open-source with community contributions

Cons

  • - Occasional privacy controversies
  • - Some usability issues reported