Good, but flawed. For some reason using this messes with my line spacings. If I have a new line between two paragraphs, it sticks them together instead. Not very usable for me.

Math mode simple does not work and deletes anything between your dollar signs.

Можно использовать не во всех полях текстового ввода, но строго в определенных. В моем случае я получил "The selected field is not valid for Markdown rendering. Please use a rich editor". Mozilla Firefox 89.0b7 (64-bit).

Working well for me so far in Gmail

This add-on is quite simply, brilliant. It lets you write Markdown in any text field that supports HTML/RTF.

I had been looking for a way to to work in Rally with Markdown and this was by far the easier option.

CTRL + ALT + M is now my favourite keyboard shortcut! Tables in Gmail are now easy!

Works great in GMail too.

This is a sweet addon... helping markdown the email at the click of a button :)

wish it could do markdown on the fly or not lose changes if you add on markdown after initially rendered. works well though!