A: All DMARC tools these days are pretty great and DMARCIAN is no different. I have really not studied their plans and offerings but I do know that:

1. If you have more than 5 domains it’s no brainer
2. If you are an MSP, people love our service
3. If you want to whitelabel the interface, we are a market leader
4. If you need easy and actionable reports we do it well.

No matter what, even one code from AppSumo beats the pricing of anyone else out there. On our paid plans, things are a little different because we just service bigger customers. Not that that means complexity, but it does mean that the things people love may not be super helpful to a single domain owner.

My perspective buy 1 code, try it - if you don't like it refund. You have lost nothing.