Free cold email calculator
Tell it how many cold emails you want out the door each day. It tells you how many domains and inboxes that takes, what the whole setup costs, and gives you the shopping list.
Count follow-ups too. Most teams send on weekdays only.
What you need
While you warm up
Prices are list prices and change, so edit them to match your quote.
Your shopping list
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Cold email works when every inbox sends a little, not when a few inboxes send a lot. The calculator uses the limits experienced senders stick to.
30 a day
That is the level most cold emailers stay under. Send more from one inbox and Gmail and Outlook start treating it as a bulk sender.
2 to 3 per domain
If one domain gets flagged, you lose a few inboxes rather than all of them. It also keeps each domain’s volume low.
Never your main domain
Use lookalike domains such as getyourcompany.com, so a bad week never hurts the domain your customers and team rely on.
New inboxes have no reputation, so Gmail and Outlook watch them closely. Build up over three weeks before you send at full volume.
| Week | Emails per inbox per day | What to do |
|---|---|---|
| 1 | Warm-up only, about 10 | Turn on warm-up in your sending tool. No campaigns yet. |
| 2 | Up to 20 | Start a small campaign to your best-fit contacts. Keep warm-up running. |
| 3 | Up to 30 | Raise volume if bounces stay under 2% and replies keep coming. |
| 4 onwards | Up to 30 | Full volume. Leave warm-up on in the background and rest any inbox whose replies drop. |
01
Pick names close to your brand, such as tryyourcompany.com. Point each one at your main website.
02
Set all three on every domain, then check them with the SPF checker, DKIM checker and DMARC lookup.
03
Add two or three inboxes per domain, connect them to your sending tool and let warm-up run for three weeks.
About 30 is the safe ceiling most senders use, follow-ups included. New inboxes should start much lower and build up over about three weeks.
Two or three. It keeps each domain’s volume low, and if one domain gets flagged you only lose a few inboxes.
Plan for two to three weeks before full volume, then keep warm-up running in the background while you send.
Both work. Many teams use a mix, because Gmail tends to trust Google inboxes and Outlook tends to trust Microsoft ones. What matters more is volume per inbox and clean authentication.
Step-by-step fix guides: Why are my emails going to spam? · Catch-all email addresses · Soft bounce vs hard bounce
