Most Popular Extensions
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Readonly Attachments Requires Restart
Saves temporary files as read-only when showing attachments.
MiniWebView Sidebar Requires Restart
Sidebar that shows a single web page. This allows Thunderbird to be augmented with any user-supplied or third-party web page. The screenshot shows an example - I use my own custom web page to present my Google Calendar in my preferred format.
Report Phishing Requires Restart
Report Phishing is an Add-on for Thunderbird that makes it easy to report phishing emails. Reported emails are analyzed for malicious links that are then sent to security companies for blocking and mitigation.
EHTip Requires Restart
Word translation in tooltip with English⟷Croatian dictionary already incorporated.
No Delete Requires Restart
Prevents to delete messages from your disk. Note that it's OK to move mail into trash folder itself.
DBus Notifications Requires Restart
Sends DBus notifications when events are detected (a new message is received).
PassToScript extension Requires Restart
Extension to pass e-mail in eml (raw) format directly to the script specified
compactfolder Requires Restart
A toolbar button for compacting/purging the currently-viewed...
MinimizeToTray Requires Restart
Minimizes Mozilla windows into the system tray. Also includes a right clickable tray icon menu to further load only the windows you want visible...
Enigma-code Requires Restart
Proste i szybkie szyfrowanie korespondencji e-mail, jak i dowolnego tekstu. Algorytm szyfrowania oparty na sposobie szyfrowania maszyny Enigma.
Ethical signature Requires Restart
Add a button to the email composition toolbar, which lets you insert an ethical signature.
Zonio Freebusy for Lightning Requires Restart
Finds when are people available for a meeting or event via Zonio Freebusy service. Displays freebusy blocks instantly in Invite Attendees window while attendees are being added. Works with both local calendar storage or any calendar provider.
Switch Link External Handler Requires Restart
Provides abilities to switch external handlers to open links.
To create your own collections, you must have a Mozilla Add-ons account.