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DKIM Verifier Featured

Verifies the DKIM-Signature of an e-mail.

Rated 4 out of 5 stars (49)
18,893 users

Quicktext

Quicktext is an extension for Thunderbird that lets you create templates that can be easily inserted into your own emails.

Rated 4 out of 5 stars (470)
105,337 users

Signature Switch

Switch the signature on/off or choose a new one from your predefined set.

Rated 4 out of 5 stars (273)
44,333 users

SmartTemplates Featured

SmartTemplates offers an easy and powerful way to automatically create customized replies by auto-inserting various mail headers. Templates can be created for every mail identity, Stationery files can now be imported and used directly.

Rated 4 out of 5 stars (81)
3,452 users

Signature sync for Gmail

This extension allows you to automatically use your signature from Gmail accounts in Thunderbird. No longer need to maintain two separated signatures!

Rated 4 out of 5 stars (8)
972 users

Advanced Composer

Creates message templates with variable support, quote header in Ms Outlook style, signatures, custom attachment info for cloud files, and more.

Rated 4 out of 5 stars (9)
398 users