For every 500 e-mails I receive, approximately 60 are not spam. Lucky for me, the spam filter in Thunderbird does a good job of getting rid of most of it.
This incredibly accurate study of the e-mail I receive was made over the period of 3 days. Ok, so maybe it’s not very accurate, but frankly I don’t want to figure out averages over a longer period of time. Now, if someone were to make a Thunderbird extension for it, that would be sweet!
I seem to get less spam on the weekends.