Steph, founder of LandLordMax Property Management Software, has posted a very descriptive post about the problems of dealing with email spam.

I just can not imagine receiving thousands of spam emails every single day. I’m not even close to that amount of emails. I used to receive less than one hundred per day (fingers crossed!).

To deal with them, I use SpamAssassin. It is setup to tag and redirect emails to a special account. Periodically, my email client downloads those emails to a SPAM folder and I inspect those tagged emails once a day. The inspection is pretty straightforward as most of the times the subject line is enough to decide if it is spam or not.

This system is working for me, but again, I receive a moderate amount of email each day.