Scanning Outgoing email attachments

Greetings all.I am currently sending out a lot of resumes.Is there any possible way that when someone gets my email,and sees “attachment”,that it can be “stamped”,or something to show that the attachment IS indeed clean,and has been scanned. I am finding out that when people see an attachment,from someone they do not recognize,they simply delete it.I know I do.Even though I have NIS2010.still,you are never sure.Any comments would be appreciated.