# Mailspring

> Open-source desktop email client for Mac, Windows and Linux

Mailspring is a desktop email client for Mac, Windows and Linux with a unified inbox for Gmail, iCloud, Office 365, Fastmail, Outlook.com, Yahoo and other IMAP accounts. The code is open source under the MIT license, and mail syncs directly between the provider and the computer. The app is free with unlimited accounts. A Mailspring Pro subscription lifts the weekly limits on snooze, send later, follow-up reminders, read receipts and link tracking.

- **Category:** Email Apps
- **Made by:** Foundry376, LLC
- **Website:** https://www.getmailspring.com
- **Runs on:** macOS, Windows, Linux
- **Facts last checked:** Oct 5, 2026

## Pricing

Mailspring has a free plan. Paid plans start at $8 per month, or $85 per year (Mailspring Pro).

- **Pricing model:** Free plan
- **Free plan:** Unlimited accounts, unified inbox, search, mail rules, signatures, templates and themes. A free Mailspring ID adds weekly allowances of Pro features, such as 15 snoozes and 5 send-later messages.
- **Free trial:** None listed.

| Plan | Price | What you get |
| --- | --- | --- |
| Free | $0 | Complete email client with unlimited accounts and a unified inbox. Weekly allowances of Pro features: 15 snoozes, 5 send-later messages and 5 tracked messages. |
| Mailspring Pro | $8 per month, or $85 per year | Unlimited snooze, send later, follow-up reminders, read receipts and link tracking, plus higher caps on translation, grammar check and contact profiles. |

Read from https://www.getmailspring.com/docs/about-mailspring-pro-subscriptions on Oct 5, 2026. Prices change, so confirm with Mailspring before buying.

## Ways to pay less

- **11% off with annual billing** (Annual discount): Mailspring Pro is billed monthly at $8 by default. The subscription docs list an annual plan at $85 a year, which they describe as an 11% discount. Source: https://www.getmailspring.com/docs/about-mailspring-pro-subscriptions
- **Multi-seat discounts for teams** (Other savings): The subscription docs say discounts on multi-seat licenses and annual team plans are available by contacting Foundry376's sales address. Source: https://www.getmailspring.com/docs/about-mailspring-pro-subscriptions

## Key features

- **Unified inbox:** One inbox for Gmail, iCloud, Office 365, Fastmail, Outlook.com, Yahoo and other IMAP accounts. The free version puts no limit on the number of accounts.
- **Advanced search:** Mailspring indexes mail so that Gmail-style search queries can look through message contents across every connected account.
- **Read receipts and link tracking:** Notifies you when a recipient opens a message or clicks a link. A free Mailspring ID can track 5 messages a week of each kind, and Pro is unlimited.
- **Send later, snooze and reminders:** Schedule a message, snooze a conversation, or get a reminder when nobody replies. The free allowance is 5 send-later messages, 5 reminders and 15 snoozes a week.
- **Translation and grammar check:** Translates drafts and incoming messages and checks grammar in the composer with LanguageTool. Both have weekly caps, which are higher on Pro.
- **Open source with direct sync:** The full codebase is published under the MIT license. Mail syncs over IMAP straight from the provider to your machine, not through Mailspring's servers.

## Good for

- Linux users who want a modern desktop email client
- People who want a free client with unlimited accounts
- Anyone who wants read receipts and link tracking built into email

## Worth knowing

- There is no iOS, Android or web version; the docs say the team is focused on the desktop app.
- Exchange (EWS and ActiveSync) and POP3 are not supported. Microsoft 365 accounts connect over IMAP and SMTP.
- The calendar is a read-only preview for Google accounts; a full calendar is described as coming later.
- No one-time or lifetime license is offered, and Pro does not include premium support.

## Works with

Gmail, Office 365, iCloud, Fastmail, Outlook.com, Yahoo Mail, LanguageTool

**Tags:** Email client, Open source, Templates

## Alternatives

- [Thunderbird](https://toolgpa.com/tools/thunderbird): Free, open-source email app for Windows, macOS, Linux and Android. [Compare](https://toolgpa.com/compare/mailspring-vs-thunderbird)
- [Mailbird](https://toolgpa.com/tools/mailbird): Desktop email client for Windows and Mac with a unified inbox. [Compare](https://toolgpa.com/compare/mailbird-vs-mailspring)
- [eM Client](https://toolgpa.com/tools/em-client): Desktop email client for Windows and Mac with calendar and chat. [Compare](https://toolgpa.com/compare/em-client-vs-mailspring)
- [Microsoft Outlook](https://toolgpa.com/tools/microsoft-outlook): Microsoft's email and calendar app for desktop, mobile and web. [Compare](https://toolgpa.com/compare/mailspring-vs-microsoft-outlook)
- [Apple Mail](https://toolgpa.com/tools/apple-mail): Free built-in email app for iPhone, iPad and Mac. [Compare](https://toolgpa.com/compare/apple-mail-vs-mailspring)

## Sources

The prices, plans, platforms and features above were read from these pages on Oct 5, 2026:

- https://www.getmailspring.com/
- https://www.getmailspring.com/pro
- https://www.getmailspring.com/download
- https://www.getmailspring.com/docs/about-mailspring-pro-subscriptions
- https://www.getmailspring.com/docs/free-plan-limits
- https://www.getmailspring.com/docs/cost-of-mailspring
- https://www.getmailspring.com/docs/exchange-with-mailspring
- https://www.getmailspring.com/docs/pop3-or-pop-protocol-support
- https://www.getmailspring.com/docs/mailspring-for-ios-or-android
- https://www.getmailspring.com/docs/does-mailspring-have-a-calendar

Page: https://toolgpa.com/tools/mailspring
Listed by ToolGPA (toolgpa.com).