Transfer Immunity

Transfer Immunity is a fast and secure add-on and SaaS service for sharing and transferring files. This high-fidelity, SaaS-based platform allows users to send large files to different destinations as attachments with emails.

ThunderBrowse Requires Restart

Did your friend send you a cool link? Want to read the rest of that interesting article? Don't want to open up your web browser just to view it? You don't have to! Just view it in Thunderbird with ThunderBrowse!

DMS HEADERS EXTRACTOR

An extension that help you to extract the 'from' , 'subject' and 'return path' header parameters of emails that exist in any selected folder or account or just all the accounts on your thunderbird

Personas Windows Classic Statusbar Requires Restart

“Personas” add-on installed, but bottom status bar still gray? This add-on modifies style so Personas footer can show. For desktop's gray “Windows Classic” theme (only Windows 2000 theme) with “Default” app theme. Requires Personas add-on ≤1.5.*.

Deselect on Delete TB78

Disables selection of the next message when deleting.

A quick port of squib's "Deselect on Delete" for thundebird 78.

Open Conversation Button Requires Restart

Adds a toolbar button to open selected email's conversation.

PennyPost Requires Restart

This extension makes it very easy to generate and attach stamps to outgoing mail. It also automatically detects and verifies stamps on incoming emails. The MBound algorithm requires a 16MB fixed table to work, HashCash is more CPU intense.

Cairo-Dock unread messages Requires Restart

Displays the number of unread messages in all inboxes on your dock.

Restartless Restart

This 15KB restartless add-on will add a "File" -> "Restart" menu item and a ctrl/cmd + alt + r hotkey to restart Firefox or Seamonkey.

google-pagerank

Show Password On Input Requires Restart

Gives an option to show the master password on input

Check Attachment before Send Requires Restart

Confirms to send a mail with any attachment.

One-by-One Forward Requires Restart

Highlight multiple emails, right-click, then select "One-by-One Forward". This extension will allow you to forward the selected emails, one-by-one, to the recipients you specify using your choice of attachment handling.

ConferenceCall.nl templates

Voegt de handige e-mail templates toe aan de knoppenbalk van Thunderbird om deelnemers aan uw conference call uit te nodigen.

QuickFilter Unreplied Requires Restart

Battered with Emails? Need to sort them out? This extension adds a button to the Quick Filter toolbar that shows only unreplied emails. The extension works instantly, just install and look at your Quick Filter toolbar.

Message Header Toolbar Customize

You can change icon display and button order. You can also hide unnecessary buttons.

Remove Duplicate Messages

Search and remove messages which are the same as other messages in your mail folders (referred to as duplicates or dupes).

FileLink Provider for Box

Uploads your large attachments to your Box instead of sending them by email.

BorderColors D

Shows a colorful border around the "New Message" window, so you can tell different identities apart.

Builds on the original BorderColors and the "GT" version, adding different border styles.

FileLink for Plik

Plik no longer offers uploads without an account. So the add-in currently only works for self-hosted instances of the software. Currently I cannot promise a date for a fix. Sorry.