Once you get DMARC setup correctly you can easily run it without any sort of reporting service. Using DMARC is more about having a process for properly adding

Once you get DMARC setup correctly you can easily run it without any sort of reporting service. Using DMARC is more about having a process for properly adding new senders once everything is setup than it is a long term cost sink. You can keep a reporting service around to monitor your email delivery, but you don’t have to at all.