Question 1

What is email warm-up?

Accepted Answer

Warm-up is the process of slowly increasing how many emails a domain or mailbox sends each day, over two to six weeks, so receivers like Gmail and Microsoft build trust in you before you hit full volume. It tells inboxes you are a real, engaged sender rather than a sudden burst of bulk mail.

Question 2

How long should I warm up a new domain?

Accepted Answer

A brand-new domain should ramp over 30 to 45 days. A domain with a clean sending history can ramp in 14 to 21 days. The calculator lets you set the ramp length; for a new secondary domain, use the longer end.

Question 3

How many emails per day should I start with?

Accepted Answer

Start at 20 to 30 cold emails per day per mailbox. The calculator uses your start volume and grows it on a smooth curve until it reaches your target on the final day of the ramp.

Question 4

What should I watch while warming up?

Accepted Answer

Keep bounce rate under 0.5%, keep spam complaints near zero, and make sure open and reply rates stay healthy. If bounce or complaint rates climb, pause the ramp for a few days and clean your list before continuing.

Question 5

Is this warm-up calculator free?

Accepted Answer

Yes. The ramp plan is free and does not require a signup. It runs entirely in your browser, so your numbers are never sent anywhere.

Email warm-up calculator

Warm-up checklist

Check the domain before you ramp