Mailbird alternatives: 5 apps ranked by verified data
Common reasons people leave Mailbird: no mobile apps, and free tier only covers one account. We ranked 5 alternatives by how directly each one replaces Mailbird, then by reviews, real visits and how recently each app's facts were checked against its own website. eM Client currently ranks first.
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Show all 5 alternativesThe best Mailbird alternative for…
The highest-ranked app in this list for each need.
Best Mailbird alternative for most people
eM ClientA deeper desktop client with calendar, tasks and PGP on Windows and Mac.
Best Mailbird alternative for a free option
ThunderbirdFree and open source with unlimited accounts and add-ons.
Best Mailbird alternative for a free plan you can upgrade
SparkFree for unlimited accounts, with mobile apps as well as desktop.
Best Mailbird alternative for open source
MailspringOpen-source client with a free tier and Linux support.
Best Mailbird alternative for Mac
Microsoft OutlookThe new Outlook for Windows is free and handles Gmail and IMAP accounts too.
Best Mailbird alternative for Windows
eM ClientA deeper desktop client with calendar, tasks and PGP on Windows and Mac.
Best Mailbird alternative for Linux
ThunderbirdFree and open source with unlimited accounts and add-ons.
Best Mailbird alternative for iPhone and Android
SparkFree for unlimited accounts, with mobile apps as well as desktop.
Best Mailbird alternative for working in the browser
Microsoft OutlookThe new Outlook for Windows is free and handles Gmail and IMAP accounts too.
Mailbird alternatives: common questions
What is the best alternative to Mailbird?
eM Client ranks first right now. A deeper desktop client with calendar, tasks and PGP on Windows and Mac. Thunderbird and Spark follow it in our ranking.
Is there a free alternative to Mailbird?
Yes. eM Client (free plan + paid), Thunderbird (open source), Spark (free plan + paid) and Mailspring (free plan + paid) have a free option. Check each app's verified facts for current plan limits.
Is there an open-source alternative to Mailbird?
Yes: Thunderbird and Mailspring.
Which Mailbird alternatives work on Linux?
Thunderbird and Mailspring run on Linux.
Why do people switch from Mailbird?
The complaints we hear most: no mobile apps; free tier only covers one account; integrations are mostly embedded web apps.
How is this list ranked?
Every app is scored with the same published formula: how directly it replaces Mailbird, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.