Privacy and Security
Check Domain Requires Restart
This extension is to display the warning dialog when you send mail for multiple domains.
Confirm-Address Requires Restart
Confirm E-mail address before sending mail
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.
Check and Send Requires Restart
Check the message contents and addresses before you send the message...
Flex Confirm Mail Requires Restart
Confirm mail address and attachments based on flexible rules.
Auto Address Cleaner Requires Restart
Removes comment, display name automatically from addresses before sending mail.
DL for Thunderbird Requires Restart
Allows to convert large attachments to links automatically without 3rd party providers.
Mail Merge Requires Restart Featured
Mass Mail and Personal Mail
Too Many Recipients Requires Restart
Contourne la limite du nombre de destinataires/e-mail des serveurs SMTP.
Gets around the limit on the number of recipients/e-mail of SMTP servers.
Evita la limitación de número de destinatarios/e-mail del servidor SMTP.
InfoNotary Configurator for Mozilla Requires Restart
Configures Mozilla for work with certificates issued by InfoNotary Plc.
BorderColors GT Requires Restart
How many time you sent an email from your wrong email address?
This add-ons allows you assign a different color to the compose window border for each of your email addresses. So you can immediately view from what account are you writing.
Copy Folder Requires Restart
The missing Thunderbird "copy folder" feature! Copy folders or entire POP/IMAP accounts recursively to any location while maintaining folder structure.
Encrypt if possible Requires Restart
Sets message security option "encrypt message", if valid X509 certificates are found for all recipients.
Enigmail Requires Restart Featured
OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.
MEGAbird Requires Restart
Add MEGA support to Thunderbird's Filelink feature.
Correct Identity Requires Restart
Ever sent mail from the wrong email address because you forgot to select the correct identity in the compose window?
Cert Viewer Plus Requires Restart
Certificate viewer enhancements: PEM format view, trust configuration
Asks for the master password at startup (fixes multiple password prompt)
Identity Chooser Requires Restart
Identity Chooser helps you to always use the correct identity when composing a new email.
DKIM Verifier Requires Restart
Verifies the DKIM-Signature of an e-mail.