One quick metric that you can use to assess your reputation right now is your Sender Score. The Sender Score is generated from the Return Path reputation data network which aggregates information from 85 million mailboxes at a variety of ISPs, spam filtering and security companies. The better your Sender Score, the better your email sender reputation. The score is on a scale of 0 to 100, where 0 is the worst, and 100 is the best possible score.
Find out your Sender Score now.