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Mozilla Thunderbird vs Fastmail

Side-by-side comparison for macOS

Mozilla Thunderbird

7.0
Communication

Customizable email client

Fastmail

7.0
Communication

Email client

Metric Mozilla Thunderbird Fastmail
Category Communication Communication
AI Score 7.0 7.0
30-day Installs 1.6K 106
90-day Installs 4.8K 356
365-day Installs 18.3K 1.1K
Version 150.0.1 1.2.1
Auto-updates Yes Yes
Deprecated No No
GitHub Stars 2
GitHub Forks 1
Open Issues -
License MPL-2.0
Language
Last GitHub Commit 2y ago
First Seen Oct 9, 2012 Oct 13, 2025

Reviews

Mozilla Thunderbird

Mozilla Thunderbird is a customizable email client that offers robust support for email workflows, end-to-end encryption, and integration with modern chat platforms like Matrix. It appeals to power users who value flexibility and security in their email experience.

Thunderbird is an email client that provides tools for managing email accounts, supporting advanced features like encryption, chat integration, and customization.

Pros

  • + Highly customizable interface and features
  • + Supports modern email features like encryption and chat integration
  • + Auto-updates ensure users stay current with the latest features

Cons

  • - Limited GitHub activity and community engagement
  • - Appeals primarily to a niche audience of power users

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