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Thunderbird

Free email application that’s easy to set up and customize - and it’s loaded with great features!

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Avg rating of 3.7 (63)| 65 comments
Screenshot
Dark Mode
Mail Account Setup Wizard
Calendar
One-click Address Book
One-click Address Book
Tabbed Email
Search Tools
Add-ons Manager
 Suggest and vote on features

Thunderbird Features

  1.  Extensible by Plugins/ExtensionsThunderbird can be extended with add-ons, plugins and extensions.
  2.  Multiple Account supportThunderbird support multiple accounts without the need to logout and login
  3.  Calendar IntegrationThunderbird lets you sync your tasks and events with your calendar application.
  4.  Email OrganizerThunderbird allows you to take control of your inbox by filtering and control tools.
  5.  Dark ModeThunderbird supports dark mode for comfortable usage in low light conditions.
  6.  Support for ThemesYou can use themes and templates to change the look and feel of Thunderbird.
  7.  Integrated Password ManagerThunderbird lets you access all the passwords you’ve saved across your different devices.
  8.  Import/Export OPML FeedsImport and export your feed subscriptions into OPML format with Thunderbird.
  9.  PortableThunderbird can be used from a USB stick or similar with no prior installation.

Thunderbird information

  • Developed byMZLA Technologies Corporation
  • LicensingOpen Source and Free product.
  • RatingAverage rating of 3.7 (63 ratings)
  • Alternatives94 alternatives listed

Supported Languages

  • English
  • Chinese

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Top Thunderbird apps (extensions / mods etc)

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Our users have written 65 comments and reviews about Thunderbird, and it has gotten 2194 likes

Thunderbird was added to AlternativeTo by Mogelfar on and this page was last updated .

Comments and Reviews  Post a comment/review

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3psilon
  
Top positive comment ago
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I have tried several email clients including Outlook, Em Client, Claws Mail, Zimbra Desktop, Mailbird... and went back to Thunderbird every single time.

Thunderbird is simply still the most customizable email client out there that delivers a solid, stable performance for the unbeatable price of free.

Supports an unlimited number of mailboxes, calendards, has full-text email search, can show you an unified inbox, you can easily compose HTML messages, read RSS feeds, use extensions etc. It's really a Swiss army knife.

The only real alternative is Claws Mail if you rather prefer a fast, lightweight client.

If you only use 1-2 mailboxes (or don't mind paying) and use Windows, Em Client is a decent alternative, too, with a steady release period.

Good to know: Thunderbird is not an abandoned project, it's maintained by the community and bugfixes, minor feature updates are being released periodically.

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13
oxitaurus
  
Top positive comment ago
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A valid free alternative to Thunderbird does not exist in this world. It's perfect in many ways, it also has flaws but can not convince me to remove it from all my computers that I have and I've had over time because I have not found anything so exceptional.

3 replies
Janeson89

Have you tried mailspring?

Reply written ago

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yishmeray

I tried mailspring. Won't work for me. Free is limited to 4 email accounts. Might've been ok otherwise, but I have a lot more email accounts than that.

Reply written ago

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bawldiggle

Using Classic 52.5.2 (32-bit), and can still use Classic Extensions.
1,400 emails in "Inbox" and too many custom folders ... no problems or bugs.. Best move has been to save eMails as EML files to safety away from Mozilla (after uninvited Fox upgrade to Quantum deleted all bookmarks.)

Reply written ago

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3
Chtiland
  
Top negative comment ago
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Thunderbird has always been my favourite email client. But update after updates, Thunderbird gets worse and worse.

On each update, disabled extensions increase, and lot of them are no more updated, or, when they are updated, doesn't work as they should.

Some features asked for years by many users are still not made (like mail summary in list, as you can see in Apple Mail, and most of other email clients). Can't use maildir (beta / unsafe) instead of mbox.

I'm really fed up fighting with Thunderbird on each update with features like "dark mode" I don't really need or could wait for (as they disabled themes support which was useful for "dark mode" or "accessibility").

Looks like Mozilla is trying to kill Thunderbird !

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5
NuncioBitis
  
Review ago
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Thunderbird is OK as a lightweight mail client, but it really lacks a lot of functionality I got used to with Google and Outlook. Also - it crashes frequently on my Mac.

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0
hasanyildiz
  
Positive comment ago
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The fact that it's free and open source is reason enough to use it.

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TimAustralia
  
Review ago
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Sadly, filters are an almost total fail (at least with Gmail). Even when you do 'create filter from message' and it populates the module itself, it STILL won't work.

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clementinbonneauriera
  
Positive comment ago
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The new UI is neat

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Tags

  • Email Client
  • Encryption
  • Task Management
  • RSS Reader
  • desktop-interface
  • Calendar
  • RSS
  • rss-feeds
  • email-clients
  • email-management
  • mail-clients

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