rmail-unrmail-new-mail-maybe
rmail-unrmail-new-mail-maybe is a compiled Lisp function in `rmail.el
'.
(rmail-unrmail-new-mail-maybe FILE SIZE)
If newly read mail from FILE is in Babyl format, convert it to mbox format.
SIZE is the original size of the newly read mail.
Value is the size of the newly read mail after conversion.