Free tool · Shareable scenarios
What is cold email
actually worth to you?
Five sliders between you and an honest pipeline forecast: how many emails, how many replies, how many meetings — and what that's worth in revenue.
Your monthly funnel
Emails sent / month
1,980
Replies
59.4
Interested conversations
20.8
New customers
4.2
Projected new revenue
$20,790
per month · $249,480 a year
Estimates, not promises — your list quality and copy decide which side of the averages you land on. The share link in your address bar keeps this exact scenario.
The math nobody shows you before you buy a sales tool
Volume is a multiplier, not a strategy
Doubling sends doubles output only if reply rate holds. It usually doesn't — bigger lists mean looser targeting. The calculator makes that trade-off visible: try halving volume and doubling reply rate.
Reply rate is where fortunes change
Moving from 2% to 4% replies doubles your entire pipeline with zero extra sending. That's why list quality and first lines beat every growth hack.
Positive replies are the real currency
A reply that says 'remove me' counts in vanity dashboards. Only interested conversations move revenue — typically 30–50% of replies on a well-aimed campaign.
Deliverability is the silent variable
Every assumption above collapses if you land in spam. Authentication, warmup and volume discipline aren't optional extras — they're what makes the rest of the math real.
Questions, answered honestly
What's a realistic reply rate for cold email?
Across the industry, 1–5%. Campaigns with a tightly defined audience, personalized first lines and a clean list reach 5–10%. If a vendor promises you 20%+, they're quoting their best campaign ever, not an average you can plan on.
Why does the calculator ask for positive replies, not just replies?
Because 'no thanks' and 'unsubscribe' are replies too. Typically 30–50% of replies are positive on a well-targeted campaign. Counting raw replies as pipeline is the #1 way cold email ROI gets oversold.
How many emails can one mailbox safely send per day?
20–50 cold emails a day per mailbox is the safe band in 2026. Pushing one mailbox to hundreds a day is what burns domains. To scale volume, you add mailboxes and domains — not heat.
Does this calculator account for deliverability?
Indirectly — the reply rate you enter already bakes it in. An email that lands in spam has a 0% reply rate, which is why the same list and copy can produce wildly different results depending on sender reputation. Protecting that reputation is most of the game.
Can I share a scenario with my team?
Yes — every slider you move is saved into the page URL. Copy the address bar and anyone who opens the link sees exactly your scenario.
Keep going
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Like the projection? Now make it real.
Norbelys runs the sending, the warmup and the reputation protection — and only counts opens from real humans, so the numbers you report are numbers you can defend.
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