martin f krafft <madd...@madduck.net> [2019-10-26 11:16 +1300]:
Folks, I need to start sending out text/html alternative parts to my messages with mutt. However, this is a rabbit hole, so if you’re afraid of those, stop reading now. My requirements are, in decreasing order of priority: 1. Compatible with all Gmail, Outlook, Hotmail, Apple Mail, Thunderbird, and whatever else many people are using these days. 2. Markdown processing of text/plain 3. multipart/alternative result, MIME compliant 4. Attachments 5. Sensible integration with mutt 6. PGP signatures 7. Inline images and after surveying the field, and spending hours with the solutions I found during various web searches, I am writing in to you for some feedback, input, guidance, psycological help, and maybe even some hugs.
A few years back I developed a simple filter that does, more or less, what you're looking for. I believe it fulfills your first 5 requirements. I've not designed nor tested it with PGP signatures or inline images. It serves as a replacement to Mutt's sendmail command, it processes the text using reStructuredText (that should be easily switched with markdown), and the result is a multipart/alternative that contains the original message as text/plain and a text/html. I don't know how well it complies with standards, and I haven't tested the resulted mail with all possible email clients. I believe it works well with Gmail and thunderbird. If this sounds interesting, you can find it at https://github.com/amitramon/plainMail2HTML Hope it helps, Amit
