Greetings, Constant Contact team, We are longterm/loyal customers and CC has been terrific. But, we are encountering a growing number of companies where our contacts are located at that: block CTCT's IP address To counter this type of problem offers dedicated IP addresses assigned to a specific client only. CTCT's workaround of Whitelisting & Self-authentication is non-viable for us. I don't want to change services... but this is important (and btw I encountered the same problem with CTCT blasts at the last organization I worked at. A major non-profit I know, migrated to because of this POD) I have seen posts about this topic in the community forum, and no one from the CTCT end seems to be high enough in the company hierarchy to pursue it.    ‎ This service would benefit all and help Constant Contact retain clients. Can someone investigate and get back to us. ... View more