MZLA Technologies (Mozilla)
Thunderbird
Free, open-source desktop email client funded by donations, now also on Android.
Price, checked Oct 26, 2026FreeTry Thunderbird free
Where it fits
- GmailOutlookSomething else
- device
- MacWindowsAndroid
- price
- FreeUp to $10 a monthUp to $20 a month
Pricing
- Free plan
- Yes
From MZLA Technologies (Mozilla)'s pricing page, checked October 26, 2026. Prices change; the vendor's page has today's.
Features
- Works on
- Mac, Windows, Linux, Android
- Accounts
- Gmail, Outlook, Any IMAP
Thunderbird alternatives
ReaddleSpark MailEmail client by Readdle with a smart inbox, AI assistant and shared team inboxes.Free plan · paid from $8.25/user/mo
MicrosoftMicrosoft OutlookMicrosoft's email and calendar app; free with ads, ad-free with a Microsoft 365 plan.Free plan · paid from $1.67/user/mo
SuperhumanSuperhuman MailKeyboard-driven email app with AI drafting and team sharing for Gmail and Outlook.From $25/user/mo
CartasecCanary MailEmail app with an AI Copilot, read receipts, PGP encryption and shared inboxes.Free plan · paid from $3/user/mo
AppleMailBuilt into macOS, iOS and iPadOS: Apple's mail app, with Apple Intelligence summaries.Free
Proton AGProton MailEnd-to-end encrypted email from Switzerland-based Proton, with a free plan.Free plan · paid from $3.99/user/mo
GoogleGmailGoogle's email service on web and mobile, with Gemini drafting and thread summaries.Free plan · paid from $7/user/mo
MimestreamMimestreamNative macOS email client for Gmail, built on the Gmail API.From $4.17/user/mo
Questions
How much does Thunderbird cost?
Thunderbird is free, according to MZLA Technologies (Mozilla)'s site on October 26, 2026.
Is there a free version of Thunderbird?
Yes, Thunderbird has a free plan.
What does Thunderbird work on?
Thunderbird works on Mac, Windows, Linux and Android.
What are the best Thunderbird alternatives?
The email apps reviewers recommend most besides Thunderbird are Spark Mail, Microsoft Outlook and Superhuman Mail. Each is compared below.
We don't test apps ourselves. Features and prices come from MZLA Technologies (Mozilla)'s own site, and alternatives are ordered by what independent reviewers recommend.