Receiver determination dependence correctly execute FTP and mail adapter

Hi,

I want to execute a receiver bc when a first bc is correctly execute. If the first bc is error on the comm channel then no must continue at the second bc.

I need send email when the file is copy on FTP directory. The file is copy from ftp1 to ftp2 and The email must atachment the file.

Exist solution diferent on SAP po?

Any solution recomend?