Add your domain
Add the domain in your SMTP-X panel and choose the IP to configure it with. (Free accounts don't get the IP selector.)
01 multiple domain
Multiple domains on one IP — at no extra cost.
Use a different domain, or even a subdomain, for each purpose. It's a better way to communicate with your clients, and SMTP-X includes it with every dedicated IP.
IPv4 Dedicated pools. Domain-level reputation you control — not a shared neighbourhood.
Metrics Delivered, bounced, deferred as they happen. SMTP and API, same path.
Relay STARTTLS on 587, or the HTTP API. Transactional and bulk on one set of credentials.
How do you add a domain to your SMTP server?
One domain takes less than 5 minutes to set up. Here is the whole process.
Get DNS configuration
Within seconds the system generates the DNS records for your domain, ready to copy.
Add CNAME records
In your DNS provider, create CNAME records with the Host and Value data from SMTP-X. Keep TTL at default.
Verify and send
Back in SMTP-X, the domain flips from Pending to Active once DNS verifies — usually within 5 minutes.
DNS tips that save you a support ticket.
Turn the proxy off
If your DNS provider offers a proxy option (like Cloudflare's orange cloud), switch it off for these records. Keep them DNS-only.
Allow propagation time
CNAME changes can take up to 72 hours to propagate, though they usually apply considerably sooner.
Check the record format
Type: CNAME. Name: the Host value from SMTP-X. Value: the Target value from SMTP-X. TTL: default.
Test before you launch
Verify your setup with the free SMTP test tool — enter your details and see the delivery result instantly.
Exclusively designed for professionals.
One dedicated IP, unlimited domains, five-minute setup. Included in every paid plan from €39/month for 100,000 emails.
We accept cryptocurrency (USDT, USDC, BTC, ETH and more).