52 Add-ons in this Collection
Organize your schedule and life's important events in a calendar that's fully integrated with your Thunderbird email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars.
This extension allows you to export your saved passwords and disabled login hosts using XML or CSV files that can be imported later.
LookOut is a plugin which allows Thunderbird to interface with Microsoft's mail tools by decoding metadata and attachments encapsulated/embedded in a TNEF encoded attachment (aka winmail.dat).
Switch the signature on/off or choose a new one from your predefined set...
Adds toolbar buttons to the customize toolbar window in several programs including Firefox, Thunderbird and SeaMonkey. Some of the buttons make commonly preformed actions quicker, others add new functionality.
FoxClocks shows times around the world - or just your local time - at the bottom of your browser. It deals with daylight saving time so you don't have to.
Quicktext is an extension for Thunderbird that lets you create templates that can be easily inserted into your own emails.
Allow to redirect (a.k.a. "bounce") mail messages to other recipients.
CuteMenus - Crystal SVG by mrtech, Static_Nexus, others
Note from Mozilla: This add-on has been discontinued. Try Menu Icons Plus instead.
Adds icons to all menus along with some other features...
Extracts all attachments from selected messages and then can delete, detach or mark-read.
The "Swiss army knife" of folders. Turn your favorites into tabs - open folders and subfolders, move mails without scrolling around or searching. powerful + easy.
See new mail at a glance after automatic filtering - supports quickFilters addon!
AutoAuth automatically submits HTTP authentication dialogs when you’ve chosen to have the browser save your login information.
Allows for customization of the folder pane. Accounts can be rearranged and the startup folder can be chosen.