Looking for a Newton alternative? Mailspring is packed with features you know and love and is available for Mac, Windows and Linux!

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Boost your productivity and send better email with Mailspring, the best mail client for Mac, Linux, and Windows.

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Everything you need.

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iconAdvanced Search

Mailspring indexes your mail so you can use advanced, Gmail-style search queries and search message contents across all your connected accounts. Never lose an email again. Learn More >


Your signature should leave a lasting impression. Mailspring's beautiful signature editor makes it easy to create custom signatures, complete with images and links to social media profiles. See How >

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unified inbox screenshotUnified inbox

Using a single inbox for all of your email accounts helps you get more done in less time. Mailspring supports every major mail provider—Gmail, iCloud, Office 365, Outlook.com, Yahoo!, and IMAP/SMTP—so you have a single, streamlined command center for all your messages.


Business happens in every language. Mailspring can translate messages written in English into Spanish, Russian, simplified Chinese, French, and German—right inside your draft.

Receive email in other languages? Mailspring will offer to translate incoming emails into your system language whenever possible.

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spell check screenshotSpell Check

Mailspring auto-detects the language you're using and spell checks in that language. No need to change your settings!

Extensive Localization

Mailspring has been translated into German, French, Spanish, Korean, Japanese, Chinese, Polish and Brazilian Portuguese by volunteer contributors and machine-translated into 60 more languages so you'll feel right at home. A right-to-left layout for Hebrew and Arabic ensures it blends in to your desktop.

Easy RSVPs

When you receive invitations to events via email, Mailspring displays the event information and allows you to RSVP without leaving your mailbox!

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Themes you'll love.

Mailspring includes multiple layouts and themes, so you can match your desktop or your mood!

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Go further with Mailspring Pro.

Understand your audience. Send timely follow-up. Turn clicks and opens into actionable insights. Mailspring Pro is your unstoppable email sidekick for sales and business.

contact card screenshotManage your busy inbox

Mailspring Pro removes the limits in the free version, so you can snooze messages, schedule reminders, and send later an unlimited number of times and conquer your inbox.


contact card screenshotContact and company profiles

Understanding your contacts and customers is the key to connecting with them. Mailspring provides the context you need right beside your emails. Enriched contact profiles include bios, links to social profiles, your previous conversations and more.

Mailspring also digs deep and retrieves company info including office timezones, headcount, fundraising status, and more. See How >

iconRead Receipts

Activity tracking is built into Mailspring so you get notified as soon as contacts read your messages and can follow up appropriately.

iconLink tracking

How contacts engage with your content gives you insight into what's working and what's not. Mailspring can notify you when your links are clicked so you know what's generating interest. See How >

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iconQuick reply templates

Typing common emails over and over is a drag—and when you send outreach that works, you want to reuse it. Mailspring's quick reply templates let you create a library of customizable emails that are at your fingertips every time you send.

Mailbox Insights

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Mailspring's Activity tab shows a breakdown of your email activity, including the time of day you receive the most email and the click and open rates of your tracked outbound messages. Identify your most effective subject-lines and templates at a glance to optimize your messaging.

Mailspring Pro is only $8/mo, and you can test-drive Pro features a few times each week for free.
Learn more about Mailspring Pro

A new beginning for Nylas Mail.

Who is Mailspring?

Hi there! My name is Ben Gotow, and I'm one of the original authors of Nylas Mail. My company, Foundry 376, is re-launching Nylas Mail because I believe it can be—and should have been—the best new mail client in a decade.

We're spinning up new infrastructure, re-writing huge parts of the codebase, and committed to offering the same free version and paid Pro features that made Nylas Mail the best mail client for work.

What's better about Mailspring?

  • The JavaScript sync engine has been replaced with a new C++ core built on the same framework that powers Sparrow, Airmail, and more. Mailspring uses ~50% less RAM, syncs mail faster, and won't hurt your battery.
  • Heavy dependencies have been removed and the package manager has been re-written for speed. Mailspring launches in a second.
  • This is just the beginning. Mailspring isn't VC funded and doesn't need to make millions to succeed. Just a thousand paid subscriptions will make Mailspring a stable business and we have big ideas for the future of email.

Just getting started? Find your email provider's IMAP / SMTP settings:

Office365 Yahoo Fastmail AOL Mail.com

Mailspring's use of information received from Google APIs adhere to the Google API Services User Data Policy, including the Limited Use requirements.