Custom Domain Email for AI Agents

Brand the sender, keep the isolation

Out of the box an agent sends from its own AI email address on the shared send.mails.ai domain — working email in one API call. When you want customers to see your name, connect your domain and the same agent sends as support@yourcompany.com, authenticated end to end.

# agents work instantly on the built-in domain: this is the agent's
# address in the API, and its mail goes out as sarah.acme@send.mails.ai
{ "email": "sarah@acme.mails.ai" }

# connect yourcompany.com and the same agent sends as
{ "email": "sarah@yourcompany.com" }

Authentication without the checklist

SPF, DKIM, and DMARC are generated for you — copy the records into DNS and verification completes on its own. Reputation stays per agent — or fully isolated on a dedicated IP, on request on Scale, once volume justifies it (see automated dedicated IP warm-up). Inbound to your domain’s agent addresses is parsed and injection-scanned like any other, and there is no extra fee for the domain — custom domains come with Pro and Scale.