Domains & DNS
Production email sends from your domain. Add one in the portal (we recommend a dedicated subdomain like send.yourapp.com), publish the DNS records we generate, and hit verify.
What the records do
| TXT Domain | Proves you own the domain. |
| TXT SPF | Authorizes our infrastructure to send for the domain. |
| CNAME DKIM ×2 | Cryptographic signing keys — the thing inbox providers actually trust. |
| TXT DMARC | Recommended policy record; start with p=none while warming up. |
Verification
DNS propagation usually takes minutes, occasionally hours. Verification re-checks automatically once started — the domain page shows per-record state. When all required records verify, the domain flips to verified and any address at it can send. Sender identities (the local part before @) are provisioned automatically on first use, including display names.
Plans and domain counts
Domains are the thing we never make you ration: Free includes 2, Launch 15, Build 50, Grow 2,000. Deleting a domain stops its sending immediately and releases the slot.
Warm-up
New accounts ramp daily sending limits automatically (day one is small, limits grow each day). This is deliberate: inbox providers distrust brand-new domains that suddenly blast volume, and the ramp is what keeps your long-term deliverability high. Hitting the ramp returns 429 daily_limit_reached.