Add-ons
Most Popular All »
- 1. Lightning 6,891,657 users
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- 6. Addressbooks Synchronizer 33,999 users
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- 8. DOM Inspector 25,263 users
- 9. Display Mail User Agent 23,900 users
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Featured Extensions See all »
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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.6,891,657 users -
Download all the links, movies and audio clips of a page at the maximum speed with a single click, using the most popular, lightweight and reliable external download managers.2,242 users -
The first and only download manager/accelerator built inside Firefox!1,236 users
Up & Coming Extensions See all »
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Join partial messages. Somewhat similar to MS Outlook Express "combine and decode".2,604 users -
Quote Colors allows you to select text and background colors of different quote levels which are applied when reading or printing mail/news messages. Additionally, you can choose between graphical and traditional plain text quoting display mode.1,826 users -
Synchronizes selected addressbooks with other instances of thunderbird
using ftp/webdav/imap servers33,999 users -
An easier management of the user interface language2,180 users -
SmartTemplate4 offers an easy way to automatically create customized replies by auto-inserting various mail headers. Templates can be created for every account as well as for the default (all email accounts). Also supports the Stationery Add-on.18,173 users
Featured Collections See all »
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Featured Add-ons for Seamonkey
None
15 add-ons
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