Saves the realm's own wording of a message in a language, after MailTemplates.problem() has checked it.
MailTemplates.problem()
the message's id
the language tag
{ subject, text, html }
Optional
who saved it
{ ok, message }, or a coded refusal
{ ok, message }
Saves the realm's own wording of a message in a language, after
MailTemplates.problem()has checked it.