I'm after suggestions about "better" mail clients than Mutt, principally for FOSS dev. My baseline is Mutt because I used it before and it basically does what I expect, but I'm not sure whether more recent alternatives do things "better".
- Talks to an IMAP server (Gmail) and probably speaks SMTP (but I'm happy to set up a local MTA if needed)
- Deals well with mailing lists—the threading support in Mutt is great, is there anything better?
- Ability to interleave quotes, my response and code—in Mutt this is basically up to me and my editor (emacs and vim when remote) but I've seen some clients use Markdown
- Can be accessed from Ubuntu and OS X
I don't have any great preference if it's a local program or web-based—but I'd prefer not to move my data off to another third-party.