I want to upvote this as well. We have also had customers contact us convinced our email was a scam or we had been hacked. I'm sure there are many others who have not contacted us but just assumed it was a scam. Frankly I'm surprised more people don't complain. "r20.rs6.net" looks very suspicious.   In addition to an option to turn off link tracking, another idea, possibly easier to implement, is to simply use a less cryptic and suspicious domain for tracking! If the link was instead "r20.constantcontact.com" it would be much less suspicious. Many people know who constant contact is or could look up the domain easily for a sense of comfort that they're not being phished. ... View more