Yes - AuthSMTP offer a facility
to duplicate / copy your outgoing emails - this is great
to keep a backup of emails sent!
This feature is done 'silently' and
each message you send is copied back to an email address
you specify.
To set this up login to the Control
Panel and select the 'Duplicate Outgoing Mail' option.
When duplicating email it will cause
your message quotas to be used up more quickly - each
message sent with duplication enabled will count with
1 extra recipient - for instance:
