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Free Tool

Email Warm-up Calculator

Generate a custom week-by-week IP warm-up schedule based on your list size, target send volume, and IP type. Never damage a new IP again.

Your Sending Details

Target daily send volume50,000
IP Type
Sender Reputation History
Domain Age
DKIM + SPF + DMARC configured?
Why IP Warming Matters
New IPs have zero reputation
Mail servers distrust new sending sources. Without warming, even clean lists get filtered to spam immediately.
Gradual ramp builds trust
Starting low and increasing volume proves to ISPs that you send wanted, engaged mail — not spam blasts.
Engagement signals are key
During warm-up, only send to your most engaged subscribers. High open rates tell ISPs you are a trusted sender.
Skipping warm-up is costly
Sending full volume on a new IP causes immediate blacklisting. Recovery can take 30–90 days.