Multiple domain DKIM authentication would be a big win for our company. We use two domains to reach the same customers based on the type of service they are requesting (in our case, purchasing equipment versus renting equipment). Creating a Constant Contact account for each domain requires us to waste time managing/updating our contact list in two places - as well as cross-referencing/tracking engagements rates. Having the ability to authentic two domains in one account would be a huge timesaver. ... View more