Privacy and Security
Remote Content By Folder Requires Restart
Decide whether to allow or block remote content in messages by comparing the names of the folders in which they are located to configured regular expressions.
DL for Thunderbird Requires Restart
Allows to convert large attachments to links automatically without 3rd party providers.
WarnAttachment Requires Restart
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.
OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.
Mail Merge Requires Restart Featured
Create and Save or Send Multiple Individual and Personalized Messages from a Draft
Allow HTML Temp Requires Restart
This Add-on allows to have HTML temporarily allowed in the currently displayed message by only one click. When switching to another message, it'll be shown automatically again in plain text or simple html mode (if this is your default mode).
Flex Confirm Mail Requires Restart
Confirm mail address and attachments based on flexible rules.
Master Password+ Requires Restart
Various enhancements for build-in "master password" (MP)
-Locks master security device on demand or after specified time
-Prompts for MP on browser startup
-Suppresses all or duplicate MP prompts
-Locks up entire application or individual windows
MailHops Requires Restart
MailHops maps the route an email took to get to you. Displaying the senders location, weather, user-agent and authentication used.
DKIM Verifier Requires Restart
Verifies the DKIM-Signature of an e-mail.
Confirm-Address Requires Restart
Confirm E-mail address before sending mail
Thunderbird-DontRestoreTabs Requires Restart
Allows the user not to restore tabs at startup in Thundertbird
MEGAbird Requires Restart
Add MEGA support to Thunderbird's Filelink feature.
Secure Addressing Requires Restart
This add-on provides features to avoid sending emails to wrong addresses. Key features are a confirmation window of recipient's addresses upon sending, name and affiliation look up at mail composition and main windows, and safe auto completion.
TORPEDO - TOoltip-poweRed Phishing Email DetectiOn Requires Restart
TORPEDO ist ein Tool zum Erkennen von betrügerischen Links (Phishing). Bewegen Sie die Maus über einen Link in einer Email. TORPEDO zeigt Ihnen die tatsächliche Webadresse in einem Tooltip an und hilft Ihnen, diese zu untersuchen.
KeeBird Requires Restart
Use KeePass Password Safe to manage your login credentials.
This is the replacement for the KeeFox extension for Thunderbird.
Signal Spam Requires Restart
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).
Don't Send Linked Files Requires Restart
Prevents sending of linked files if they are file: URLs.
TorBirdy Requires Restart
This extension configures Thunderbird to make connections over the Tor anonymity network.
Esign Requires Restart
Электронная подпись для сообщений в Thunderbird на основе API клиента "ГУЦ"