No i meant it differently.
I have an alias user@example.com which forwards to user@gmail.com
The idea is when user@gmail.com gets an email through the user@example.com alias, they can also reply to it and it will show up as user@example.com.
Simplelogin does this through a reverse alias, the reply to address is not the actual address, rather it's an alias for the reply-to address, so it can rewrite the message as if it came from the alias.
