Hi After having the Dkim addon i would like to request to have an addon for Dmarc also. Thanks :)
DMARC is all manually done at DNS level with required SPF and/or DKIM enabled and configured (also partially at DNS level and a bit more at server level for DKIM) see Email - Steps to ensure your site/server email doesn't end up in spam inboxes | Centmin Mod Community Email - Free Weekly DMARC Email Reports for Your Domain from Postmark | Centmin Mod Community