(eq nnimap-stream 'starttls))
(fboundp 'open-gnutls-stream))
(nnimap-command "STARTTLS")
(gnutls-negotiate (nnimap-process nnimap-object) nil))
((and (eq nnimap-stream 'network)
(eq nnimap-stream 'starttls))
(fboundp 'open-gnutls-stream))
(nnimap-command "STARTTLS")
(gnutls-negotiate (nnimap-process nnimap-object) nil))
((and (eq nnimap-stream 'network)