MAIL FROM: Following getting a EHLO, the sender will then provide a textual content snippet outlining where by asynchronous bounce messages must be returned aka the return route handle. This command also serves to be a notification for the SMTP server that a completely new information transaction is commencing. https://it-support30505.dailyhitblog.com/32191399/how-email-marketing-can-save-you-time-stress-and-money