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Start with Inbox

Selects the latest message in the Inbox after start of Thunderbird.

Rated 4 out of 5 stars (19)
1,233 users

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Close Search Tabs

Add a button to close all search results tabs in Thunderbird

Rated 1 out of 5 stars (1)
46 users

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AI Mail Support

Add-on designed to enhance email management for both personal and professional use, integrating a set of adanced AI (LLM) features to optimize the email management experience.

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39 users

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Birdbox

Maintain your favorite websites as spaces within Thunderbird

Rated 5 out of 5 stars (1)
45 users

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Allday Tasks

Thunderbird lacks the ability to create and manage allday tasks. This add-on adds these capabilities.

Rated 5 out of 5 stars (1)
84 users

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DeepL-Write for selected text

Unofficial DeepL Write extension for Thunderbird.

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19 users

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Chichewa Spell Check

This is a real time Chichewa Spell Checker (Malawi) supported on Firefox, Thunderbird, and Seamonkey.

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6 users

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Tibetan Spellchecker

Tibetan (bo) spellchecker at syllable level (not composed words).

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1 user

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Dictionary of Spanish / Nicaragua

Dictionary of Terms of Nicaragua, Spanish dictionary based internaconal, adding support on behalf of cities and fruits, animals, plants, references, local echos and terms accepted by RAE.

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27 users

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Latgalīšu volūdys pareizraksteibys vuordineica

Biblioteka latgalīšu volūdys pareizraksteiys puorbaudei Firefox, Thunderbird, Seamonkey, Fennec

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1 user

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Venetan

Venetan spellchecker for Firefox, Thunderbird, and SeaMonkey using the spelling of Mauro Trevisan.

To enable, right-click in a multi-line text box, select "Check Spelling", then select "Languages" and then "venetan".

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18 users

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Tagalog/Filipino Dictionary

A Tagalog/Filipino Dictionary (tl) for Pale Moon, Firefox, Thunderbird, and SeaMonkey.

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1 user

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Spanish (Mexico) Dictionary

Spanish (Mexico) spell checker dictionary

Rated 5 out of 5 stars (1)
7,099 users

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Profile Switcher

Adds options to launch other profiles.

Rated 4 out of 5 stars (20)
2,636 users

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M-Hub Lite

Add Microsoft Office 365 Tabs to Thunderbird! Services supported by M-Hub Lite: Calendar, People, OneDrive, Word, Excel, PowerPoint, & Bing. Need business or enterprise support? Get M-Hub Pro: https://www.schiffner.com/software/m-hub-pro

Rated 3 out of 5 stars (5)
295 users

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UrgentMail

Raise X11 urgent flag if new mail is received.

This addon listens for incoming mails and causes the Thunderbird window to draw attention.

Rated 5 out of 5 stars (3)
250 users

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Copy Patch

Copy email content to clipboard for application as patch. Applies some filters, e.g. Outlook Safe Link unmangling, to ensure patch cleanness.

Rated 5 out of 5 stars (2)
71 users

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KeepRunning

Once you close Thunderbird you will no longer be able to see your new emails. This plugin keeps Thunderbird active in the background, meaning you can still receive your new emails after closing the app. Use this when the app is in the startup.

Rated 5 out of 5 stars (5)
1,642 users

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Unsubscribe

Lightweight solution to simplify unsubscribing from newsletters

Rated 3 out of 5 stars (16)
1,720 users

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SPAM Check for OCN

- SPAM Header Checker for OCN(Japanese Internet Provider)
- This plugin looks at the header of the mail and assigns a "junk mail" mark.
- Only if the header (X-CON-SPAM-CHECK) of the mail is set to 100%, it will be marked as "spam".

Rated 1 out of 5 stars (1)
56 users

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