Up & Coming Extensions
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Full Address Column
Adds a full sender and recipient e-mail column to message list panel.
FlexConfirmMail
Confirm mail address and attachments based on flexible rules.
(This project was renamed from "Flex Confirm Mail" to "FlexConfirmMail", due to a branding reason.)
Auto Compress File Requires Restart
Compressor for attachment files. All platforms are supported (Windows, Linux and Macintosh).
SPAMBEE
Report any unsollicited email (SPAM, Phishing, ...) to SPAMBEE.
Get an alert if you open an email containing a URL already known as fraudulent.
All reports are anonymized, no registration is required.
Extract 'Em! Featured
Extracts attachments from messages within an account or folder, with the option to select specific attachments. Extracted attachments are saved to a .zip file.
NOTICE: Version 1.1.4 of Extract 'Em! is defective, please replace with 1.1.2 or 1.2.1
RemindIt
Help in reminding mails to be answer or sent again. Choose a reminder date for each received or send message that are highlighted in the message list, depending on their status (expired, soon to exprire, to be reminded). Sending a reminder is eased.
WarnAttachment
WarnAttachment shows an additional dialog to confirm potentially dangerous attachments. Some attachments like executables etc. are completely blocked. This reduces the risk of malware especially for inexperienced users.
IMAP Quota (Free Space) Requires Restart
This Thunderbird addon lets you customize the IMAP quota statusbar panel.
Display Quota Requires Restart
This extension will display the current status of your IMAP quota in thunderbird's statusbar and will warn you when you reach a configurable limit...
Attachment Viewer: view in a tab, slideshow
View attachments in TB
Images, office files, mp3, mp4
Use Dropbox viewer for 175 file types (in v3)
* Docx, xlsx, pptx, pdf preview
* Slideshow of images
* Zoom/drag to position
* Rotate/flip image
* Download dialog with thumbnail of image
Theme Font & Size Changer (fixed)
Fixed version (no 90 day timer till silent failure) of the popular "Theme Font & Size Changer for Thunderbird" addon
Addressbooks Synchronizer
Synchronizes selected addressbooks with other instances of thunderbird
using local files, webdav servers or imap servers
LookOut (fix version)
LookOut decodes winmail.dat (TNEF encoded) files that may come from a misconfigured Microsoft Exchange server or Outlook user allowing access to the original attachments
Support: Thunderbird
Grammalecte [fr] (for Thunderbird)
French grammar checker. Included: conjugation tool, text formatter and spelling dictionaries.
ImportExportTools Requires Restart
Adds some tools to import and export folders and messages
To create your own collections, you must have a Mozilla Add-ons account.