Not getting Twitter emails? Check your spam filter.
OK, so I found out the hard way about twitter and spam filters today. I have my spam filter set at pretty low levels, and I almost never have an important email blocked as spam. But for some reason, the filter decided to block all emails sent from Twillow. If this happens to you, try this:
Locate your white list, or approved sender list
Add @postmaster.twitter.com to the list.