Add-ons
Message Composition
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*cloud - FileLink for Nextcloud OpenCloud ownCloud
Upload large attachments to your Cloud and send the link by email
40,377 users -
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.
3,943 users
Most Popular See all »
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True "Send Later" functionality to schedule the time for sending an email.127,258 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft83,406 users -
Check your emails for spelling and grammar issues80,284 users -
Switch the signature on/off or choose a new one from your predefined set.58,524 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.)56,034 users -
Securely encrypt and upload large attachments to any Send service instance (formerly Firefox Send).53,461 users
Top Rated See all »
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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。435 users -
Macro Template is to replace mail templates with macros for date formatting.617 users
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Default "Reply" functionality pays attention to "Reply-To" in original email52 users
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Allows you to use your Exchange and Office365 email account with Thunderbird using Outlook Web Access (OWA).42,083 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft83,406 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.91 users
Recently Added See all »
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Import CSV files to generate personalized email drafts, open compose tabs, or send directly in Mozilla Thunderbird.0 users -
Improve your emails with AI right inside Thunderbird compose window. Supports OpenAI, Google Gemini, Groq, and self-hosted models. Click "Improve Writing" to refine tone, style, and formatting. Customizable prompts and settings. Privacy-friendly.3 users -
An easy visual table editor for Thunderbird's HTML composer, with drag selection, formatting, resizing, headers, templates and saved models.
Provided as-is; the author is not responsible for loss or unintended results.8 users -
Adds a button to Thunderbird's compose window for inserting saved templates from the corresponding email account, including their attachments, directly into a message.6 users -
Aktiviert automatisch die Zustellstatusbenachrichtigung (DSN) und/oder Lesebestätigung (MDN) für ausgehende E-Mails in Thunderbird.1 user
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Double-click a word to highlight all its occurrences - in the compose editor and in the message view.1 user
See all 373 extensions in Message Composition »
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