Gmail recently started marking emails coming from my Zoho account as "Unable to verify that [mydomain.com] actually sent this message (and not a spammer)."
After reading about DKIM, I found a guide for setting up DKIM and SPM for my domain at GoDaddy. But this required me to set up of Zoho Campaigns to do this.
So far, this hasn't fixed the problem. Is there a more appropriate way to generate and setup a DKIM and SPM for Zoho Mail specifically?
Thank you,