What is the main difference between Mailspring and Thunderbird?

Mailspring and Thunderbird are both email clients but differ in their approach, features, and target audience. Compare their GitHub stats, technology stack, and community adoption to make the best choice.

Which is better: Mailspring or Thunderbird?

The choice between Mailspring and Thunderbird depends on your specific needs, technical requirements, and team preferences. Both are quality open source solutions with active communities.

Can I migrate from Mailspring to Thunderbird?

Migration between Mailspring and Thunderbird is possible but requires careful planning. Consider data export/import capabilities, feature parity, and potential workflow changes.

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Mailspring vs Thunderbird

Learn how Mailspring and Thunderbird differ in their key features, development activity, technology stack and community adoption, so you can decide which of these email clients is best for you.

Mailspring

Desktop email client for Mac, Windows, and Linux with unified inbox, read receipts, link tracking, send later, grammar checking, and contact enrichment.

Visit Mailspring Read more

17,943stars+14(+0.1%)

Last 30 days

Last commit
11 hours ago
Repository age
10 years
Version
1.26.2
License
GPL-3.0
Repository
mailspring

Thunderbird

Desktop email client that combines multiple accounts, calendars and contacts in one app, with a unified inbox, tagging, and no ads or data collection.

Visit Thunderbird Read more

216stars+50(+30%)

Last 30 days

Last commit
1 day ago
Repository age
1 year
License
MPL-2.0
Repository
thunderbird-desktop

Detailed Comparison

Both Mailspring and Thunderbird have their unique strengths and serve similar purposes effectively. Consider your specific needs regarding popularity, growth, activity, maturity, licensing and features when making your decision.

Mailspring wins

Community & Popularity

Mailspring significantly outpaces Thunderbird in community adoption with 17,943 stars compared to 216 stars on GitHub. This 83.1x difference suggests Mailspring has a much larger and more active community. In terms of developer contributions, Mailspring has 1,064 forks, indicating strong developer engagement.

Thunderbird wins

Growth Momentum

Thunderbird is growing faster, adding 50 stars in the last 30 days (+30%) against adding 14 stars for Mailspring (+0.1%). Thunderbird is the smaller project of the two, so it is closing the gap rather than extending a lead.

Comparable

Development Activity

Both projects show recent activity, with Mailspring last updated 11 hours ago and Thunderbird 1 day ago.

Mailspring wins

Project Maturity

Mailspring has been in development longer, starting 10 years ago, compared to Thunderbird which began 1 year ago. This 9.2-year head start suggests Mailspring may have more mature features and established processes.

Comparable

Licensing

The projects use different licenses: Mailspring is licensed under GPL-3.0 while Thunderbird uses MPL-2.0. Consider the licensing requirements when choosing for your project.

Comparable