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.
2,904 users -
*cloud - FileLink for Nextcloud and ownCloud
Upload large attachments to your Cloud and send the link by email
29,775 users
Most Popular See all »
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True "Send Later" functionality to schedule the time for sending an email.88,480 users -
Check your emails for spelling and grammar issues57,881 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft53,165 users -
Securely encrypt and upload large attachments to any Send service instance (formerly Firefox Send).41,312 users -
Uploads your large attachments to your Dropbox instead of sending them by email. This uses Thunderbird's FileLink feature.39,629 users -
Switch the signature on/off or choose a new one from your predefined set.38,572 users
Top Rated See all »
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Quickly choose one of the previously selected colors for a message text1,404 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。371 users -
Macro Template is to replace mail templates with macros for date formatting.451 users
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Default "Reply" functionality pays attention to "Reply-To" in original email56 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.74 users
Recently Added See all »
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Save and insert autotext blocks using hotkeys or special keywords in Thunderbird emails1 user -
Professional drag-and-drop email editor for Thunderbird. Create responsive HTML emails with MJML. Features AI integration (Groq) for generating emails. No coding required. One-click export to compose.2 users
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メール作成時にレピュテーションリスクのあるキーワードをチェックします。
Check reputation risk keywords when composing emails. The keyword list can be managed from the admin screen.
All data is processed locally, ensuring user privacy.3 users -
Simple and fast Thunderbird extension: select any text, right-click, and correct it instantly. Perfect for improving your emails in one step, without opening any external tool. Lightweight, convenient, and highly effective.6 users -
With this add-on, you can transfer emails directly to the documents center of your CRM or ERP.1 user
See all 257 extensions in Message Composition »
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