Hi  Rodrigo,

> Let’s suppose I want to create a thread in the mailing list that
> contains different sections, code blocks and some quotes. I used to use
> Org Mode for the format in my messages, but I just read a discussion
> where someone mentioned that getting the Org Mode and Org Babel syntax
> in the mailing list is annoying.

Personally I quite like receiving messages formatted with Org syntax because
mu4e seems to use org-mode to render it.

> 1. Is there some kind of convention for the formatting of the messages
>    in this mailing list?

I think the main thing here is that plain text is preferred.

> 2. If that’s not the case, which one should I use (Org Mode, the
>    built-in ASCII exporter, Markdown, HTML)?

Plain text is generally preferred over HTML over here. I don’t think anybody
would mind with Org, exported ASCII, though markdown might be pushing it on the
*Org* ML 😛.

All the best,
Timothy