How to Set up custom-domain email sending

Here is how to set up custom-domain email sending.

What works

Add SPF, DKIM and DMARC for your domain, verify it with your sender, and warm it up before high volume so your own domain builds reputation.

The foundation

• SPF, DKIM, DMARC on your domain.
• A dedicated, warmed IP.
• Clean lists and fast bounce/complaint handling.

How Rainmail helps

Rainmail sends from your own domain on a dedicated, isolated IP with SPF, DKIM, DMARC, reverse-DNS and managed warm-up handled for you, plus an AI watching list health and deliverability — and it welcomes senders SES, SendGrid and Mailchimp reject, from $8. Run the free checker or see plans.