Markdown Here Revival is a fork of Markdown Here, the popular browser extension in order to specifically target modern Thunderbird versions.

It lets you write email in Markdown and render it as HTML before sending. It also supports syntax highlighting (just specify the language in a fenced code block).

Unfortunately, attempts by a few members of the user community to contact the author of Markdown Here have been unsuccessful.

Thank you to @GregoryK for the wonderful new icons for MDHR 4.0!

This is a mail extension for Mozilla Thunderbird. Markdown Here Revival 4.0.0 and higher require Thunderbird 102.0 or Thunderbird 115.0.

Support for browser-based email such as GMail, Outlook, or Yahoo Mail was removed to reduce the necessary ongoing maintenace burden from these platforms.

Installation Instructions
Usage Instructions
Troubleshooting
Notes and Miscellaneous
Building
Feedback
License

Download from addons.thunderbird.net

Install it, and then…

1. Make sure you've set "Compose messages in HTML format"

2. Compose an email in Markdown. For example:

   **Hello** `world`.
   
   ```javascript
   alert('Hello syntax highlighting.');
   ```
   

3. Click the button that appears in the format toolbar.

4. You should see your email rendered correctly from Markdown into rich HTML.

5. Send your awesome email to everyone you know. It will appear to them the same way it looks to you.

After rendering your Markdown to pretty HTML, you can still get back to your original Markdown. Just click that toggle button again.

Note that any changes you make to the pretty HTML will be lost when you revert to Markdown.

Just reply as normal, any quoted replies will be ignored. (Technically: Existing blockquote blocks will be left intact.)

The Options page can be accessed via Thunderbird extensions list. The available options include:

• Styling modifications for the rendered Markdown.
• Syntax highlighting theme selection and modification.
• TeX math formulae processing enabling and customization.
• What the hotkey should be.

Coming soon!

• Markdown Here Revival uses Github Flavored Markdown.

• Available languages for syntax highlighting will soon be listed on the options page.

• Email signatures are automatically excluded from conversion.

• Styling:

  • The use of browser-specific styles (-moz-, -webkit-) should be avoided. If used, they may not render correctly for people reading the email in a different browser from the one where the email was sent.
  • The use of state-dependent styles (like a:hover) don't work because they don't match at the time the styles are made explicit. (In email, styles must be explicitly applied to all elements -- stylesheets get stripped.)

Use web-ext, mostly the same as you would for Firefox. A config file is included to make it use Thunderbird.

See the issues list and the Wiki. All ideas, bugs, plans, complaints, and dreams will end up in one of those two places.

MIT License: See the LICENSE file.

@GregoryK's new icons in MDHR 4.0 are licensed Mozilla Public License v2

Creative Commons Attribution 3.0 Unported (CC BY 3.0) License