Add-ons
Recently Updated Extensions
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Provider for Google Calendar
Allows bidirectional access to Google Calendar
quickFilters
Quickly generate mail filters on the fly, by dragging and dropping mails and analyzing their attributes. Create a filter in less than 10 seconds, it's as easy as: drag, click, click.
By popular demand, supports SORTING filters alphabetically.
Thunderbird Email 2 CSV Exporter
This add-on has been thoroughly tested on all platforms up to Thunderbird version 115. It allows you to target specific file folders and tag them for export, generating a CSV-formatted export file. Great for a large number of emails and Mailchimp.
NTFNTF
NTFNTF: Notify on This Folder Not That Folder. Choose to enable or disable notifications on a per-folder basis.
Thunderbird Conversations
Featured
This addon provides a conversation view for Thunderbird, grouping messages together and allowing you to reply "inline" thus providing a more efficient workflow.
keepassxc-mail
Move messages or yourself
Move messages or jump to folder with a keystroke.
CardBook
Featured
A new Thunderbird address book based on the CardDAV and vCard standards.
Twitter: @CardBookAddon
Microsoft 365 Link Opener
Open a shared link of a SharePoint or OneDrive file directly with the right app, instead of the browser.
Send Later
True "Send Later" functionality to schedule the time for sending an email.
Mail Merge P
Mail Merge P (Mail Merge with Preview) is a Thunderbird add-on to send bulk emails based on data provided in a spreadsheet. It uses the nunjucks templating engine.
FiltaQuilla
Adds many new mail filter actions - launch a file, suppress notification, remove star or tag, mark replied or unread, copy as "read", append text to subject.
Automatic Dictionary
Remembers the language you use with a person or group of people, and switches the spellchecker language automatically for you next time. You do not have to do it manually any more. It remembers and switches it for you.
Additional Info for Simplelogin
For e-mails forwarded by Simplelogin, a pop-up displays the original sender of the e-mail, as well as the alias that the e-mail was sent to and the address that it was forwarded to.
Next Unread Group (Mark All Read)
Adds a Group button, marks current newsgroup or folder as read and moves to the next unread message
Next Unread Thread (Mark All Read)
Adds a Thread button, marks current thread or conversation as read and moves to the next unread message
Correct Identity
Ever sent mail from the wrong email address because you forgot to select the correct identity?
Header Tools Improved
Allows to modify headers and source of messages
Grammar and Spell Checker — LanguageTool
Check your emails for spelling and grammar issues
Toggle InlineTo create your own collections, you must have a Mozilla Add-ons account.
