I need to build a small script that processes a email received from the outside, first I was thinking in just loging into gmail but that was a pain in the ass. So I think an even faster option consisting on my own smpt server running when the e-mail is expected to arrive. I think I should open the 587 port in my router and use a ddns to receive the emails. But I don't know how to proceed after that. Any help would be appreciated. Thanks!