Privacy and Security
Flex Confirm Mail Requires Restart
Confirm mail address and attachments based on flexible rules.
Check Domain Requires Restart
This extension is to display the warning dialog when you send mail for multiple domains.
confirm-mail Requires Restart
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...
Auto Address Cleaner Requires Restart
Removes comment, display name automatically from addresses before sending mail.
GProxy Plus Requires Restart
GProxy Plus lets you set and clear Freegate local proxy in Firefox and Thunderbird, and do more.
Close Proxy Authentication Requires Restart
Provides transparent proxy authentication on your enterprise network.
Close authentication dialog if login on proxy failed.
Yet Another Remove It Permanently Requires Restart
Remove elements and block content on Web pages.
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.
Get before Send Requires Restart
Get messages for the account which is bound to the identity then send the message when you click the toolbar button or the menu item. If your SMTP sever authenticates using POP(IMAP) before SMTP, the extension is useful.
DL for Thunderbird Requires Restart
Allows to convert large attachments to links automatically without 3rd party providers.
InfoNotary Configurator for Mozilla Requires Restart
Configures Mozilla for work with certificates issued by InfoNotary Plc.
Mail Merge Requires Restart Featured
Mass Mail and Personal Mail
Identity Chooser Requires Restart
Identity Chooser helps you to always use the correct identity when composing a new email.
MEGAbird Requires Restart
Add MEGA support to Thunderbird's Filelink feature.
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.
GuifiProxy Requires Restart
Simple proxy manager
- Change proxy with two clicks
- Import and export proxies lists
- Manually add, delete and edit proxies
- Automatic authentication on proxies (bypass popup with login and password)
- Proxysel replacement
Batch Copy Requires Restart
Batch Copy creates a local copy of your IMAP account, copies all messages and maintains folder structure. Batch Copy can run incrementally to copy only new messages.