ruby on rails - Method to call on mail object to deliver a text format mail -

i know message can call on mail object in console deliver mail in text format.

i debugging mailers, , typing m.deliver! in console, , opening email in email account. works fine, generates , delivers html format email. don't know text format email looks like.

i know there gems such letter_opener change mailer codes, , want know if there method can use console force text format upon delivery of mail.

any suggestions?

rails renders , delivers available formats. mail client shows html version default, can open text version too. example, in gmail choose "message text garbled". more info: http://www.mailermailer.com/support/knowledgebase/sending/kb/495