Open-source desktop email client for Windows, Mac and Linux
Mailspring is a free, open-source desktop email client for Windows, macOS and Linux that works with Gmail, Office 365, iCloud and any IMAP account. It offers a unified inbox, fast search, themes and templates, and runs its mail sync engine locally rather than in the cloud. An optional Pro subscription adds read receipts, link tracking, send later and reminders.
- features
- 5
- alternatives
- 7
- platforms
- 3
- Updated
- Oct 12, 2026
Features
Our take
Pros
- Free and open source on Windows, Mac and Linux
- Sync engine runs locally rather than through a cloud service
- Unified inbox, themes and templates in a clean interface
Cons
- Send later, reminders and read receipts require Pro
- A Mailspring ID account is required even for the free version
- No mobile apps to go with the desktop client
Editorial assessment by the Alternatives.tools team, based on what the product is known for. Not a user review.
Best Mailspring alternatives
See all 7 alternatives
ThunderbirdFreeOpen sourceFree, open-source desktop email client from Mozilla
SparkFreemiumSmart email app that sorts your inbox and adds AI tools
4.6(82.7K) · App Store
eM ClientFreemiumDesktop email, calendar and tasks for Windows and Mac
Microsoft OutlookFreemiumEmail, calendar and contacts from Microsoft
4.8(9.3M) · App Store
Apple MailFreeBuilt-in email app for Mac, iPhone and iPad
SuperhumanPaidFast, keyboard-driven email for Gmail and Outlook accounts
4.6(3.7K) · App Store
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