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SpamTester
SpamTester allows you to test the spam score of your email using popular anti-spam software (SpamAssassin, Rspamd...). This is useful to know if your email will fall into the recipient's spam (or even get your mail server blocked).
OWUI - Quick Access
This extension adds a simple button to your Spaces toolbar that opens in a new tab, providing you with one-click access to your Open WebUI Instance.
Safelink removal
Replace URLs which have been rewritten by Office 365 Advanced Threat Protection with the original URL.
Gemini Proofreader
This extension uses Gemini Flash 2.0 to proofread emails when the user clicks the extension icon.
Usage requires a Gemini API key. There is a free usage tier that should be more than adequate for almost every user.
OpenAI Proofreader
This extension uses OpenAI gpt-4o-mini to proofread emails when the user clicks the extension icon.
Usage requires an OpenAI API key. OpenAI does not offer a free usage tier. Proofreading a 4-5 paragraph email costs a fraction of a cent.
Aify
Rewrite or generate text based on promps using OpenAI's API.
Configure on settings page (make sure to save) and start to use when writing your emails!
You must have a payment method on record with OpenAI and an API key. OpenAI charge for use.
SpaceHey - Quick Access
Quick Access to SpaceHey in a new tab with just one click on a simple, stylish icon button on your Spaces toolbar.
ThunderCalc
A simple calculator for Thunderbird/Sea Monkey/Firefox, available in a pop-up window or a separate tab.
Cypherdog Encryption
ENEX Tools
Add import/export functionality of Evernote export file (enex).
* Load enex file and open message composition window with the note content
* Export messages to enex file which can be loaded by Evernote desktop client
ThunderAI (ChatGPT, Gemini, Ollama in your emails)
ThunderAI uses the capabilities of ChatGPT, Google Gemini or Ollama to enhance email management.
It enables users to analyse, write, correct, assign tags, create calendar events and optimize their emails.
ShowContactFoto
Displays the contact photo/image/picture of the sender/recipients while reading/composing message.
Images are taken from local image files or Address Book (see addon's options page).
Send Unsent Mail Button
BCM Bengali (Bangladesh) Spellchecker
Spellchecker for Bengali (Bangladesh) following Bangla Academy and Prothom Alo standards: See https://banglatypefoundry.com/spellchecker/
ansitel Click-to-Dial
This plugin will call a selected number by clicking the right mouse button.
BorderColors D
Shows a colorful border around the "New Message" window, so you can tell different identities apart.
Builds on the original BorderColors and the "GT" version, adding different border styles.
Addon Compatibility Check for TB 102/TB 115/TB 128
Checks all installed add-ons for compatibility with Thunderbird 128 (or TB 102/115) and displays status information on a button in the main toolbar. This button will open a detailed overview, including links to alternatives for abandoned add-ons.
Header Tools Improved
Telegram Web in ThunderbirdTo create your own collections, you must have a Mozilla Add-ons account.
