
Open your OTMS account and go to Settings in the lower left‑hand corner
Click Email Services from the Settings menu
Click Create Dedicated Domain
Choose a short prefix for your domain (for example: mail, m, or send)
Click Add & Verify to continue
Once you click Add & Verify, OTMS will show a list of required DNS records (SPF, DKIM, tracking CNAMEs, etc.).
If your domain is inside OTMS, click to let OTMS add them.
If your domain is external, copy each record and add it in your registrar’s DNS settings, then return to OTMS.
Wait for the security certificate
Set your dedicated header (From name & From email)
Configure reply and forward settings
Confirm everything is live
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