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SpamTester
SpamTester allows you to test the spam score of your email using popular anti-spam software (SpamAssassin, Rspamd...). This is useful to know if your email will fall into the recipient's spam (or even get your mail server blocked).
AutoZoom
Antispam
SimpleLogin - Easy Reach
An extension for Thunderbird that allows you to access SimpleLogin.
OWUI - Quick Access
This extension adds a simple button to your Spaces toolbar that opens in a new tab, providing you with one-click access to your Open WebUI Instance.
Browsing Enhanced ⁵︎ (Hide Caption T Plus)
⦁ Version 5 incoming!!
⦁ NEW! Floating Toolbars & Menus with autohide!
⦁ "Maximize your screen content space by adjusting Tabs, Toolbars, etc!".
⦁ Multiple Configurable Actions for both screen-corner buttons: App/'Home' & Close buttons!
ConfirmBeforeDelete
Owl for Exchange
Allows you to use your Exchange and Office365 email account with Thunderbird using Outlook Web Access (OWA).
Show Outlook Appointments (vcal / ics)
Requires Restart
An extension to show embedded Outlook calendar (vcal / ics) parts.
Thunderbird doesn't show calendar parts from Outlook appointment emails. This addon adds a button to download the embedded appointment as ICS to import it into another calendar.
Flat Folder Tree (updated)
Flat Folder Tree enables you to selectively breakout sub-folders under intermediate folders in the folder pane view. This is an updated version of the existing addon, now compatible with Thunderbird 60.
FileLink Provider for Box
Uploads your large attachments to your Box instead of sending them by email.
Flat Folder Tree Reborn
Requires Restart
Flat Folder Tree Reborn is an update of the Flat Folder Tree add-on, which allows you to selectively promote or breakout sub-folders in the folder tree. Use with IMAP servers where some folders remain collapsed under a special namespace like [Gmail].
Open Tab
Toggle Word Wrap
Requires Restart
Toggle word wrapping and <PRE> element wrapping in the message composition and HTML display windows, respectively. Based on original version by Kaspar Brand.
MessagePreview
MessagePreview adds a column to the Thunderbird message list to display the message preview in a tooltip on column row icon mouse hover or a short preview in the column row itself.
Folder Colors
Requires Restart
A fork of "Color Folders" (aka "Colored Folders") to support TB 68+. Applies custom colors to the folder tree in Thunderbird.
This add-on is superseded in TB78 by the built-in folder-color changer (in folder > Properties).
TUD-CERT Phishing Report
Adds a phishing report button to the toolbar to enable members of Technische Universität Dresden to report suspicious e-mails to TUD-CERT with just a few clicks. If desired, an optional comment can be entered upon each report.
Contact Finder
Autocomplete a list of contacts when sending a message by searching their name in the address book.
S3 FileLink Provider
TabsInStatusbar&IconsInMenubar
Move tabs in status bar and iconify menu bar.
This add-on researches new tabs' position and menubar iconification.
This add-on is as role as if task bar of Windows.
To Hyun-geol who I like.
Life in Holy Spirit.
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