What is a seed list? A Clear Guide

A seed list is a set of test inboxes across providers used to measure where your mail lands (inbox vs spam) before and during a campaign.

Why it matters

Getting a seed list right keeps you compliant and lands more mail in the inbox. See the deliverability checklist.

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.