问题
Is there a straightforward way to coach TMail to make the body encoded with "quoted-printable"? I only see methods in there for decoding content like that, not creating it.
回答1:
Are you just using TMail, or are you using it with ActionMailer? It looks like TMail itself does not have the ability to encode as quoted-printable. However, it looks like ActionMailer does have this ability.
It looks like TMail allows you to set the Content-Transfer-Encoding header as follows :-
mail = TMail::Mail.new
mail.transfer_encoding = "quoted-printable"
But it looks like this doesn't actually encode the body.
You can see ActionMailer setting this header here. quoted-printable seems to be the default for ActionMailer.
ActionMailer has the ActionMailer::Quoting::quoted_printable method to encode the body as quoted-printable. Maybe you can make use of this...?
来源：https://stackoverflow.com/questions/1034135/ruby-email-encoding-and-quoted-printable-content