Free tool
Warmup schedule generator.
Enter your target daily sends and ramp preference. Get a day-by-day warmup schedule with safe volume increases.
Why warmup matters
New inboxes have no reputation. Sending 100 emails on day one triggers spam filters. Warmup builds reputation gradually.
Conservative vs aggressive
Conservative: 5-10 emails/day start, 14-day ramp. Aggressive: 10-15 emails/day start, 7-day ramp. Standard is the safe middle ground.
When to pause
If bounce rate exceeds 5%, reply rate drops below 1%, or you see deferrals — pause ramping for 2-3 days.