Add-ons
Message Composition
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SmartTemplates
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.
4,012 users -
*cloud - FileLink for Nextcloud and ownCloud
Upload large attachments to your Cloud and send the link by email
42,118 users
Most Popular See all »
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True "Send Later" functionality to schedule the time for sending an email.125,095 users -
Check your emails for spelling and grammar issues79,612 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft78,851 users -
Switch the signature on/off or choose a new one from your predefined set.57,360 users -
Securely encrypt and upload large attachments to any Send service instance (formerly Firefox Send).55,654 users -
Highlights selected text when composing emails. Default colour is yellow - other colours are available via Options.
(Works only during writing an e-mail, i.e. only in the compose window.)53,136 users
Top Rated See all »
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Quickly choose one of the previously selected colors for a message text2,016 users -
Thunderbird は Outlook のようにアドレス全選択からの「一括コピー」ができません。
それを実現するためのアドオンです。486 users -
Macro Template is to replace mail templates with macros for date formatting.586 users
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Default "Reply" functionality pays attention to "Reply-To" in original email65 users
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Warns if you send mail from or to a specified domain. If there are multiple accounts in your profile, you can isolate one so that you can't send mail to that domain from outside or vis versa without warning.99 users
Recently Added See all »
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The add-on enhances your email inbox experience through AI (LLM) support.3 users -
Manage and insert customized email templates with attachments directly from the compose window.10 users -
Quill lets you integrate AI writing assistance (Ollama, OpenAI, or Claude) to help you write or respond to emails un Mozilla Thunderbird.6 users -
Claify est une extension Thunderbird qui intègre l'intelligence artificielle Claude (Anthropic) directement dans votre client email. Résumez, traduisez, corrigez et rédigez vos emails en un clic.
Fait avec ❤️ par Supersonique Studio3 users -
Highly-customizable and performant extension for @-mentions inside Thunderbird.22 users
See all 275 extensions in Message Composition »
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