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Mailspring

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

Free plan · from $8/moEmailChecked Oct 5, 2026
Visit getmailspring.com
Mailspring, as pictured on getmailspring.com
How Mailspring presents itself. Image from getmailspring.com.

What is Mailspring?

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.

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

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.

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.

Mailspring pricing

Starts at
$8 per month, or $85 per year (Mailspring Pro)
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
Free$0Complete 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$8per month, or $85 per yearUnlimited snooze, send later, follow-up reminders, read receipts and link tracking, plus higher caps on translation, grammar check and contact profiles.

Read from getmailspring.com on Oct 5, 2026. Prices change, so confirm with Mailspring before you buy.

Pricing in detail

Ways to pay less

  • Annual discount11% off with annual billing

    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.

    Stated on getmailspring.com
  • Other savingsMulti-seat discounts for teams

    The subscription docs say discounts on multi-seat licenses and annual team plans are available by contacting Foundry376's sales address.

    Stated on getmailspring.com

Works with

Mailspring alternatives

All Mailspring alternatives comparedAll email apps

Common questions

Is Mailspring free?

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

How much does Mailspring cost?

Mailspring lists 2 plans. Free: $0. Mailspring Pro: $8 per month, or $85 per year. Prices were read from getmailspring.com on Oct 5, 2026.

What platforms does Mailspring work on?

Mailspring is available on macOS, Windows and Linux.

Does Mailspring offer any discounts?

Mailspring publicly lists the following: 11% off with annual billing; Multi-seat discounts for teams.

Does Mailspring have an Android app?

No Android app was listed when its pages were read on Oct 5, 2026. Mailspring is listed for macOS, Windows and Linux.

Does Mailspring have an iPhone app?

No iPhone app was listed when its pages were read on Oct 5, 2026. Mailspring is listed for macOS, Windows and Linux.

Is Mailspring open source?

Yes. Mailspring is open source, according to its own site.

What does Mailspring integrate with?

Mailspring's listing names Gmail, Office 365, iCloud, Fastmail, Outlook.com, Yahoo Mail and LanguageTool. A listing names up to eight integrations, so it may connect to more.

Who makes Mailspring?

Mailspring is made by Foundry376, LLC.

What are the alternatives to Mailspring?

The closest alternatives to Mailspring in our directory are Thunderbird, Mailbird, eM Client, Microsoft Outlook and Apple Mail. Each one has a side-by-side comparison with Mailspring.

Sources for this page

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