How to Send 1 million emails

Here is how to send 1 million emails.

What works

At a million emails you need a dedicated IP, gradual warm-up, clean segmentation, and real-time bounce/complaint handling — raw APIs without deliverability tooling will get throttled.

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.