emailing

Hi,

Is it possible to change the email I am sending with emails with every xx emails?
And I want it to be random letters, like if my domain is gotoworknow.com
I want the email adresses I send from to be like hjievbhujt@gotoworknow.com fernhbfrhe@gotoworknow.com fuihrnerioc@gotoworknow.com , etc

is that possible?