Clean, open-source email client with fast search and a unified inbox for several accounts.
Open sourceEasy to use
Free alternative to
Code activity
- Stars
- 17,998
- Forks
- 1,065
- Open issues & PRs
- 22
- Last commit
- 1 day ago
- Latest release
- 2 weeks ago
Details
- Type
- Open source
- License
- GPL-3.0
- Written in
- TypeScriptJavaScriptFluentHTML
- Platforms
- Windows · Mac · Linux
- Ease of use
- Easy to use

Pros
- Tidy design and fast search
Cons
- Send later and read tracking require Pro
- No calendar
Use Mailspring instead of
OutlookA clean, good-looking mail client with fast search.
How is the 100/100 "Health" score calculated?
Dorabot computes it weekly from public GitHub data; it is not a review of software quality: 40 points for code freshness (a commit in the last 30 days earns full points), 25 points for popularity by stars, 20 points for a recent release, 15 points for the ratio of open issues to stars. 80+ is Good, 60–79 Fair, below 60 Weak.
FAQ
Is Mailspring free?
Yes. Mailspring is open source (GPL-3.0 license) and free for personal and commercial use.
Which platforms does Mailspring run on?
Mailspring is available for Windows, Mac and Linux.
What can I use Mailspring instead of?
Mailspring is a free alternative to Outlook.
Similar apps
No apps match. Try removing a filter.