According to a study by Lyris, (via ZDNet), Gmail’s spam filter accidentally trapped only about 3% of legit email this year, as opposed to 44% last year. Maybe Google just needed a little time to train their algorithms or something. Now if they could just get CSS in HTML email working a little better.
Are you wondering if your emails are even making it into the inbox? DeliveryMonitor is a nice, quick way to find out (read our review here then MailChimp customers can take advantage of this special offer from DeliveryMonitor).