Add-ons
Message Composition
-
*cloud - FileLink for Nextcloud and ownCloud
Upload large attachments to your Cloud and send the link by email
40,169 users -
SmartTemplates
SmartTemplates offers an easy and powerful way to automatically create customized replies by auto-inserting various mail headers. Templates can be created for every mail identity, Stationery files can now be imported and used directly.
3,925 users
Most Popular See all »
-
True "Send Later" functionality to schedule the time for sending an email.122,884 users -
Check your emails for spelling and grammar issues77,826 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft77,687 users -
Switch the signature on/off or choose a new one from your predefined set.56,728 users -
Securely encrypt and upload large attachments to any Send service instance (formerly Firefox Send).54,002 users -
Highlights selected text when composing emails. Default colour is yellow - other colours are available via Options.
(Works only during writing an e-mail, i.e. only in the compose window.)52,690 users
Top Rated See all »
-
Quickly choose one of the previously selected colors for a message text1,953 users -
Thunderbird は Outlook のようにアドレス全選択からの「一括コピー」ができません。
それを実現するためのアドオンです。466 users -
Macro Template is to replace mail templates with macros for date formatting.593 users
-
Default "Reply" functionality pays attention to "Reply-To" in original email63 users
-
Allows you to use your Exchange and Office365 email account with Thunderbird using Outlook Web Access (OWA).44,981 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft77,687 users
Recently Added See all »
-
BYO AI Grammar is a Thunderbird add-on that provides inline grammar suggestions while composing email. You bring your own LLM, as long as it follows the OpenAI API (could use local LLM; untested). I use tiny and cheap google/gemma-3n-E4B-it0 users -
Paste clipboard images inline in Thunderbird with PNG, JPG, or automatic format selection.3 users -
Sets a default font of your choice for every new composed e-mail.8 users -
Add images via clipboard, drag & drop, or file import. Resize and convert image files to JPGs, automatically rename and number them. Sort, rotate, or edit your image attachments. All within the jpg-attacher add-on window.6 users -
The add-on enhances your email inbox experience through AI (LLM) support.12 users -
Manage and insert customized email templates with attachments directly from the compose window.35 users
See all 283 extensions in Message Composition »
To create your own collections, you must have a Mozilla Add-ons account.
