Domain Warmup Calculator
A brand-new domain has no sending reputation, so blasting volume on day one is the fastest way to the spam folder. Warmup ramps sending gradually so mailbox providers learn to trust you.
emails/day
emails/day
%
Estimated warmup time
13 days
About 3 working weeks of ramping.
Week 1 ends near
74 /day
How it works
Starting from a small daily volume and increasing it by a fixed percentage each day compounds quickly. The calculator solves for the number of days to reach your target. Keep the daily increase modest (20 to 40 percent) and pair the ramp with real engagement; warmup speed is a guide, not a guarantee.
Make these numbers real.
Scheduler Zero handles warmup, authentication, and reputation so your deliverability stays high and your funnel math actually holds up.