---
title: "How do I warm up a new email sending domain?"
summary: "Start with 20 to 50 sends per day to your most-engaged recipients (people who opted in recently or replied recently). Double daily volume weekly until you reach your target send rate, typically over 3 to 6 weeks. Set up SPF, DKIM, and DMARC records before the first send. Sending high volume from a cold domain on day one will land your emails in spam permanently."
canonical: https://unlocksaas.com/answers/how-do-i-warm-up-a-new-email-domain
updated: 2026-05-22
publisher: "Unlock SaaS"
author: "Maryan"
license: All rights reserved. Quotation with attribution permitted.
---

# How do I warm up a new email sending domain?

> Start with 20 to 50 sends per day to your most-engaged recipients (people who opted in recently or replied recently). Double daily volume weekly until you reach your target send rate, typically over 3 to 6 weeks. Set up SPF, DKIM, and DMARC records before the first send. Sending high volume from a cold domain on day one will land your emails in spam permanently.

## Supporting points

- Engagement signals (opens, clicks, replies) build sender reputation. Send to subscribers who actually engage; skip the dormant ones during warm-up.
- Transactional emails (welcome, receipt) build reputation faster than marketing broadcasts because they're high-engagement. Send them first if your stack supports it.
- Subdomain strategy isolates risk. Use mail.yourdomain.com for marketing and updates; transactional comes from app.yourdomain.com. If marketing tanks reputation, transactional stays clean.

## Related terms

- [Seinfeld Email](https://unlocksaas.com/glossary/seinfeld-email) – Russell Brunson's daily email pattern – a slice-of-life story in the founder's voice that pivots into the offer in the last few lines.

---

Canonical URL: https://unlocksaas.com/answers/how-do-i-warm-up-a-new-email-domain
Publisher: Unlock SaaS (https://unlocksaas.com)
Contact: maryan@unlocksaas.com