serdo post the actual error please. The troubleshooting guide helps you retrieve it. We are not psychic you know. So, please start following instructions so we can help you in an efficient way.
Especially with email the error can be a load of different things. From the outbound SMTP port being blocked, to gmail declining the request, to missing spf records, to the wrong send email address (from). We dont know unless you post the logs or use debug, how to do this is described in the guide.
