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Safelink removal

Replace URLs which have been rewritten by Office 365 Advanced Threat Protection with the original URL.

Rated 5 out of 5 stars (2)
173 users

Metamorfik

The Altium Forums are the best way to participate in discussions, share tips, ask/answer questions and locate resources.

Not yet rated
1 user

Open in browser

A context menu item to open the links associated with feed items in the default browser and then mark them as read.

Rated 5 out of 5 stars (1)
283 users

Archive old messages

A context menu item to archive all messages than older than a given duration.

Not yet rated
361 users

ReplyAsOriginalRecipientUp

When you reply to a mail sent to your personalized address (postfix/qmail/gmail extensions) such as john.doe+contactname@example.com, "From:" is replaced by your personalized address rather than your simple address.

Rated 4 out of 5 stars (9)
809 users

Aranese spell checker

Aranese (Occitan) spell checker - Diccionari ortogràfic d'Aranés

Not yet rated
11 users

ThunderThings

Integration between Thunderbird and Cultured Code's Things application.

Rated 4 out of 5 stars (3)
10 users

Webpage Opener

Adds a button to the toolbar to open a user defined webpage.

Rated 5 out of 5 stars (1)
9 users

sms77

Send SMS via sms77

Not yet rated
66 users

Send then Archive

Automates the process of archiving a message that has been replied to.

Rated 2 out of 5 stars (5)
30 users

BCM Bengali (Bangladesh) Spellchecker

Spellchecker for Bengali (Bangladesh) following Bangla Academy and Prothom Alo standards: See https://banglatypefoundry.com/spellchecker/

Not yet rated
6 users

Scriptable Notifications

Allows you to define an external script (bash, batch, python, ...) which is called so you can manage mail notifications / alerts the way you want.

Snap/Flatpak versions of Thunderbird not supported.

Rated 5 out of 5 stars (2)
261 users

DS-BCC

Data protection extension, to avoid data mishaps with circular mails:

1. warning for e-mail with multiple recipients not in BCC (exceptions possible)
2. warning for roundmails with a different recipient domain
3. warning if PGP key is present

Not yet rated
98 users

Attachment Saver

Saves all attachments from multiple selected emails as a single zip file.

It provides an extra option in your context menu when selecting emails.

Rated 4 out of 5 stars (9)
753 users

Owl for Exchange

Allows you to use your Exchange and Office365 email account with Thunderbird using Outlook Web Access (OWA).

Rated 5 out of 5 stars (197)
42,347 users

FileLink Provider for Box

Uploads your large attachments to your Box instead of sending them by email.

Rated 3 out of 5 stars (12)
11,685 users

Dark Plain Text

Use dark mode styling when reading plain text emails with a dark theme.

Rated 5 out of 5 stars (1)
517 users

Freecosys - FileLink provider

Turns your huge files into short links

Not yet rated
231 users

Open Tab

Link open in new tab.

Rated 5 out of 5 stars (6)
488 users

S3 FileLink Provider

Uploads your large attachments to S3

Rated 1 out of 5 stars (1)
572 users