What is email preview text? A Clear Guide

Preview (preheader) text appears after the subject line in the inbox and, written well, materially lifts open rates.

Why it matters

Knowing email preview text helps you land 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 a REST API and an AI watching deliverability — and it welcomes senders SES, SendGrid and Mailchimp reject, from $8. Run the free checker or see plans.