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+=head1 NAME
+
+lei-convert - one-time conversion from one mail format to another
+
+=head1 SYNOPSIS
+
+lei convert -o OUTPUT [OPTIONS] LOCATION
+
+lei convert -o OUTPUT [OPTIONS] (--stdin|-)
+
+=head1 DESCRIPTION
+
+Convert messages to another format.  C<LOCATION> is a source of
+messages: a directory (Maildir), a file (various mbox), or a URL
+(C<imap://>, C<imaps://>, C<nntp://>, or C<nntps://>).  URLs
+requiring authentication use L<git-credential(1)> to
+fill in the username and password.
+
+For a regular file, the location must have a C<E<lt>formatE<gt>:>
+prefix specifying one of the following formats: C<mboxrd>,
+C<mboxcl2>, C<mboxcl>, or C<mboxo>.
+
+=head1 OPTIONS
+
+=over
+
+=item -F MAIL_FORMAT
+
+=item --in-format=MAIL_FORMAT
+
+Message input format.  Unless messages are given on stdin, using a
+format prefix with C<LOCATION> is preferred.
+
+=back
+
+The following options are also supported and are described in
+L<lei-q(1)>.
+
+=over
+
+=item -o MFOLDER, --output=MFOLDER
+
+=item --lock METHOD
+
+=item --no-kw
+
+=item --torsocks=auto|no|yes
+
+=item --no-torsocks
+
+=item --proxy=PROTOCOL://HOST[:PORT]
+
+=back
+
+=head1 CONTACT
+
+Feedback welcome via plain-text mail to L<mailto:meta@public-inbox.org>
+
+The mail archives are hosted at L<https://public-inbox.org/meta/>
+and L<http://4uok3hntl7oi7b4uf4rtfwefqeexfzil2w6kgk2jn5z2f764irre7byd.onion/meta/>
+
+=head1 COPYRIGHT
+
+Copyright all contributors L<mailto:meta@public-inbox.org>
+
+License: AGPL-3.0+ L<https://www.gnu.org/licenses/agpl-3.0.txt>
+
+=head1 SEE ALSO
+
+L<lei-mail-formats(5)>