Do you think it would be possible for, at some point during the account creation process, someone on the Constant Contact team checks the clients email provider as to their ability or restriction in using Constant Contact to send emails on their behalf? I am told that my company does not allow Constant Contact to spoof on my behalf. To do this however, I would need to supply Constant Contact with internal network security information so they can be authorized to do so. This is something extremely important that I would think the client signing up should be made aware of ahead of time.