Up & Coming Extensions
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.
Ask a confirm before to delete some items
Adds a button to open Google Keep in a new Tab
This Addon is needed to sync your Android based smartphone with Thunderbird with the Software "MyPhoneExplorer"
Add sync support for Exchange ActiveSync (EAS v2.5 & v14.0) accounts to TbSync
MailHops maps the route an email took to get to you. Displaying the senders location, weather, user-agent and authentication used.
Place phone calls directly from Thunderbird's address book
Folderpane Tools Requires Restart
Allows for customization of the folder pane. Accounts can be rearranged and the startup folder can be chosen.
Create file attachments directly from the system clipboard.
Shortcuts to move/copy messages, with folder name completion.
Set rules for moving of messages to associated folders.
View images inside TB without external viewer.
Donations to transfer to TB 78 and adding new features are acknowledged.
Category manager for Thunderbird contacts, also allows to send an email to all members of a category (categories can be used as contact groups).
Add simple functions to report spams or phishing to Signal Spam by one click.
The add-on will also alert you if you open a fraudulent e-mail (phishing).
FileLink provider for WebDAV Featured
Uploads your large attachments to your WebDAV account instead of sending them by email.
Shows a colorful border around the "New Message" window, so you can tell different identities apart.
Builds on the original BorderColors and the "GT" version, adding different border styles.
A new Thunderbird address book based on the CardDAV and vCard standards.
Sets the spell check dictionary based on the first recipient
TbSync is a central user interface to manage cloud accounts and synchronize their contact, task and calendar information with Thunderbird.
Configure text and background colors of quotes in mail and news messages.
Uploads your large attachments to your Dropbox instead of sending them by email. This uses Thunderbird's FileLink feature.
This extension adds support for CalDAV & CardDAV accounts to the Thunderbird Sync manager "TbSync". Including iCloud, ownCloud, Nextcloud, Radicale and many more.