7 Ways to Improve E-Mail Deliverability

4. Monitor your sender reputation. Take advantage of the following resources to assess your sender reputation:

* Blacklists/blocklists: Check regularly to make sure your domains and IP addresses aren’t listed on these lists used by ISPs and spam filtering providers. Some of the more popular lists include http://www.spamhaus.org, http://www.spamcop.net and http://www.mailabuse.org.