Add-ons

Contacts Sidebar by Jeroen Peters

Displays the address books in a sidebar in Thunderbirds 3-pane-window and can be toggled with the F4 key or a toolbar button.

Visit my Contacts Sidebar site for recent versions and news.

Collector's Note Ne fonctionne plus avec Thunderbird v52.x / Linux.

Email signature for Thunderbird - WiseStamp by The WiseStamp Team

Switch Thunderbird email signatures. Supports Gmail, Yahoo, AOL & Outlook webmails. Youtube, Facebook, Twitter icons & more

Mail Summaries by squib

Adds a summary of mail accounts and folders to replace the account central pane and the empty folder preview

ViewAbout by Gary Kwong

Enables access to various about: dialogs from the View menu.

Any Confirmation Message before Send by kenichisak

You can set Any Confirmation Message before Send.

Collector's Note « Using multiple accounts, occasionally I'll send an email from the wrong account, which in turn may provide a reply to the wrong account. Easy enough to move them, but this prevents the problem from occurring in the first place. Thank you. »

Message Notes Plus by alehro

Message Notes Plus allows to add notes to emails. The notes don't affect the email in any way.They are stored locally on your hard drive.
The commercial version is no longer available. More info on mnpforum.alehro00.com and forum.alehro00.com.

Imap-ACL-Extension by ds-10

Extension to manage acls/permissions for shared mailboxes/folders on imap servers.

ThunderPlunger by David White

Sorry but this addon is no longer supported in TB 60. See below.

This add-on provides a few new ways to keep Thunderbird clean.

Collector's Note « There are some nice features here for folks who don't mind taking the time to manage their email client. It's like remembering to change the oil in your car, it just needs to be done on occasion - especially if you've got emails going back more than a decade. I especially like the ability to check for bad email addresses in the address book. Unfortunately if you have a large number of email addresses you'll get greylisted pretty quickly and that makes checking your list useless after a point. »

Priority Switcher by H.Ogi

Change priority of the received messages from the toolbar button and the context menus...

Collector's Note À vérif.

Maximize Message Pane by H.Ogi

Maximize message pane by collapsing the thread pane. You can read a message in larger area without opening a new message window...

Collector's Note À vérif. Th 45.

Birthday Reminder by Sebastian Apel

Birthday Reminder reminds of upcoming birthdays for all contacts in Thunderbird's address book. Supports Lightning, reminders and even Google Calendar :-)

Collector's Note Alternative : ThunderBirthDay

View Your Certificates Email Address by Hartmut Goebel

Adds a column for displaying the certificates Email address to the "Your Certificates" tab of the Certificate Manager

Sender Verification Anti-Phishing Extension by Joshua Tauberer

Protects you from phishing attacks by verifying the From: address domain name of emails as you read them. Sender Policy Framework (SPF) and DNS-based reputation lists are used.

Subject Cleaner by mi-yo

Remove extra strings from the subject while composing the message.

Simple HT Jumper by xzer lr

A temporal simple jumper of HTML and Plan TEXT view mode on showing messages and replying messages for Thunderbird without changing the default setting.

Collector's Note Aisément passer au HTML et optionnellement imprimer en HTML :) *** Compatible Fossa Mail 25.2.0.