Mailspring
by Foundry376
Mailspring is a desktop email client for Mac, Windows and Linux that connects to your existing email accounts. It offers a unified inbox, snooze, send later, mail rules and templates, and the sync runs locally on your computer.
Worth a lookEstablished, with a few things to check (listed below).
- Stars
- 18k +6 a day
- Licence
- GPL-3.0
- Runs on
- Your computer
- Setup
- Easy
- Language
- TypeScript
- Age
- 3673 days
What you can do with it
- Manage several email accounts in one unified inbox
- Snooze emails and schedule messages to send later
- Create reusable email templates and automatic mail rules
Ways a business could use it
- Handle several business and client mailboxes in one place without paying for a premium email app
- Use templates and send-later to speed up routine replies and follow-ups
Can you use it commercially?
Free to use. Anything you distribute that includes it must be open-sourced under the same licence.
Not legal advice. Read the project's licence file before building a product on it.
Getting it running
Download a ready-made installer for Windows, Mac or Linux (deb, rpm, snap) from getmailspring.com; building from source uses npm.
Follow the official instructions in the project README.
Things to check
- Some features (link tracking, read receipts, analytics) need a paid Mailspring Pro subscription
- Plugin store is not yet available, so plugins must be installed by hand
Checked 03 Nov 2026. Summary drafted by AI from the project's README.
