1. Does Domain AGE matter for reputation 2. What's DKIM 3. Getting ReturnPath Certification 1. Does Domain AGE matter for reputation Im signed up with Send Grid and they are going to white label me off their IPs. I am going to use a domain such as BobsInternetMArketing.com as the domain and [email protected] as the from address. My question is and I am getting many CONFLICTING answers is does the AGE of the domain matter with the ISP's for inboxing. If it DOES I will buy an OLD domain from Snap Names, if not, I'll go ith what I have. 2. What's DKIM? Should I use it? 3. Getting ReturnPath Certification Best ways to get this, I know it costs, but want to use whatever you guys suggest.