Why clutter up TB with useless or hardly used add-ons? These are enough for semi-professional emailing, appointment management, and for improving organization and efficiency. (Last update for TB 9.x)
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.
Allows bidirectional access to Google Calendar
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.
Adds the Google Calendar web interface as a new tab directly into Thunderbird. Creating and viewing events works just as it would in a browser like Firefox
URL Link is a small Firefox and Thunderbird extension that allows you to select a non-URL in a mail/news message or web-page, and open it in a browser window.
Search and remove messages which are the same as other messages in your mail folders (referred to as duplicates or dupes).
Add symbol in header plane to switch between compact and expanded view. Options to switch between one or two lines compact view, which buttons should be displayed in header pane. For Thunderbird 36 and older use version 2.0.9 (see version history)
Collector's Note Provides more screen real estate for the meat of the message!
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!
Allows for customization of the folder pane. Accounts can be rearranged and the startup folder can be chosen.
Displays icon for user agent of received mails.
Allows several tweaks to the Thunderbird/Lightning calendar user interface including new selection styles and repeating event icons. Mimics the colors and styles found in MS Outlook.
Collector's Note Inching (or centimetering) our way to a more complete and efficient Lightning Calendar
Adds extension options dialogs to the Tools or Titlebar menu and includes toolbar icon.