$ man lemlist-wiki/domain-warmup

Domain Warm-Up Strategy

New domain? Send 5 emails day one, not 500. Lemwarm handles this.

Lemwarm is Lemlist's built-in warm-up tool. It sends and receives emails between real inboxes in Lemlist's warm-up network. The emails get opened, replied to, and moved out of spam - all signals that tell email providers your domain is legitimate.

Turn it on day one when you set up a new domain. Keep it running even after you start campaigns. Warm-up volume supplements your sending volume and maintains reputation.

Week 1-2: Lemwarm only. Zero campaign emails. Let the domain build baseline reputation.

Week 3: Start with 10-15 campaign emails per day. Lemwarm still running.

Week 4: Scale to 25-30 per day if bounce rate stays under 3%.

Week 5+: Full volume (50-75 per inbox per day max). Never exceed this regardless of how "warm" you think you are.