MOST POPULAR All »
1.
Provider for Google Calendar
234,960 users
2.
Manually sort folders
195,367 users
3.
ImportExportTools NG
191,011 users
4.
LookOut (fix version)
150,036 users
5.
Quicktext
117,249 users
6.
Remove Duplicate Messages
78,843 users
7.
TbSync
69,594 users
8.
CardBook
66,845 users
9.
Enigmail
66,310 users
10.
Mail Merge
63,459 users
Featured Extensions See all »
Up & Coming Extensions See all »
Featured Collections See all »

get to know
ADD-ONS
About
Blog
Developer Hub
Forum
Other languages
Privacy Policy  |  Report Trademark or Copyright Infringement  |  Legal Notices  |  Report Misuse of Thunderbird Trademark  | Report a bug
Except where otherwise noted, content on this site is licensed under the
Creative Commons Attribution Share-Alike License v3.0 or any later version.
RegisterLog inFirefoxFirefox for AndroidSeaMonkey
EXTENSIONSFeaturedMost PopularTop RatedAppearance and CustomizationCalendar and Date/TimeChat and IMContactsFolders and FiltersImport/ExportLanguage SupportMessage CompositionMessage and News ReadingMiscellaneousPrivacy and SecurityTagsTHEMESMost PopularTop RatedNewestAbstractCausesFashionFilm and TVHolidayMusicNatureOtherScenerySeasonalSolidSportsWebsites Want more customization? Try Complete Themes COLLECTIONSFeatured Collections I've Made My Favorite Add-ons Dictionaries & Language PacksSearch ToolsDeveloper Hub
›Featured›Most Popular›Top Rated›Appearance and Customization›Calendar and Date/Time›Chat and IM›Contacts›Folders and Filters›Import/Export›Language Support›Message Composition›Message and News Reading›Miscellaneous›Privacy and Security›Tags