(cond ((eq send-mail-function 'smtpmail-send-it) 'message-smtpmail-send-it)
((eq send-mail-function 'feedmail-send-it) 'feedmail-send-it)
((eq send-mail-function 'sendmail-query-once) 'sendmail-query-once)
((eq send-mail-function 'mailclient-send-it)
'message-send-mail-with-mailclient)
(cond ((eq send-mail-function 'smtpmail-send-it) 'message-smtpmail-send-it)
((eq send-mail-function 'feedmail-send-it) 'feedmail-send-it)
((eq send-mail-function 'sendmail-query-once) 'sendmail-query-once)
((eq send-mail-function 'mailclient-send-it)
'message-send-mail-with-mailclient)