Convert messages to another format. C<LOCATION> is a source of
messages: a directory (Maildir), a file, or a URL (C<imap://>,
C<imaps://>, C<nntp://>, or C<nntps://>). URLs requiring
Convert messages to another format. C<LOCATION> is a source of
messages: a directory (Maildir), a file, or a URL (C<imap://>,
C<imaps://>, C<nntp://>, or C<nntps://>). URLs requiring
fill in the username and password.
For a regular file, the location must have a C<E<lt>formatE<gt>:>
fill in the username and password.
For a regular file, the location must have a C<E<lt>formatE<gt>:>