7 Ways to Improve E-Mail Deliverability

* Feedback loops: This tool enables you to stop sending e-mails to customers who’ve indicated they no longer wish to receive your communications. Popular feedback loops are offered by AOL, Comcast and Windows Live Hotmail.

* Spam traps: Take every precaution possible to avoid sending to a spam trap, including using a confirmed opt-in process for collecting e-mail addresses to prevent someone from inputting a spam trap address.