This sounds great, but also too far from Maemo platform I'd say. More than a port, that would be a complete rewrite, don't you think ? Any attempts ?

In the meantime, I've been able to package mutt, offlineimap and msmtp as deb. I can retreive emails from my gmail account and send emails through this same account. offlineimap syncs between remote IMAP (imap.gmail.com) and a local maildir, both ways. mutt is used to access this local maildir. msmtp is used to send emails from mutt (couldn't make it work with mutt SMTP config).

Anyway this was quite complicated but at least I seem to have a beginning of reliable email program If only Modest Email client could access a maildir instead of mutt, there wouldn't be any sync problem anymore, as offlineimap can handle this and reliably.

FWIW
Cheers,
Seb