On Sunday, 31 May 2009 at 20:47, James wrote: > Agreed. > > This doesn't seem to be an issue with the IMAP server, but instead > with Mutt. Mutt works great (as it should, opening an mbox file with a > '.' in the file name) in <v1.5.19. Yes, it's a mutt bug. You can probably work around it by setting imap_delim_chars to "/" until 1.5.20.