Review on OnDMARC by Red Sift by Will Rahman

Easy setup, easy integration into other tools like SPF records, DKIM etc.Easy configuration for multiple domains. The interface is not very intuitive but if you are used to working in an enterprise environment this will be no problem at all. If your DNS provider has some kind of limitation regarding number of subdomains per account, make sure you check how many you can have before signing up. We were using it as part of our spam prevention strategy, so we needed to set up rules for various domains where we had different products/services hosted.