"(let ((message-send-mail-function 'message-smtpmail-send-it)
(mail-host-address \"example.com\")
(smtpmail-smtp-server \"localhost\")
- (smtpmail-smtp-service \"25025\"))
+ (smtpmail-smtp-service \"${smtp_dummy_port}\"))
(notmuch-mua-mail)
(message-goto-to)
(insert \"test_suite@notmuchmail.org\nDate: 01 Jan 2000 12:00:00 -0000\")