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Free Cold Email Calculator
(Cost and ROI)
Work it from either direction: tell it how many emails you send and see what comes out the other end — or tell it how many meetings you want and get the exact volume, domains, inboxes, and monthly bill required. Every assumption is editable.
YOUR TARGETREVERSE MODE
Meetings booked per monththe number everything gets sized from
FUNNEL RATES%
Reply rate3% is a realistic median
%
Positive reply rateshare of replies that aren't 'no'
%
Call booked ratepositives that pick a slot
%
Show-up ratebooked calls that actually happen
%
INFRASTRUCTURE RULESSAFE DEFAULTS
Sends per inbox per day30 keeps you human-shaped
Inboxes per domain2–3 caps the blast radius
Sending days per monthB2B weekends are dead air
Emails per leadtouches in your sequence
YOUR COSTS$
Domain costper domain, per year
$/yr
Inbox costper inbox, per month
$/mo
Sequencer costInstantly / Smartlead / etc, flat
$/mo
Lead scraping costper lead sourced
$/lead
Lead verification costper lead verified
$/lead
2,222emails to send / month
$158total cost / month
THE FUNNELMONTHLY
INFRASTRUCTURE NEEDEDSIZED
Sends per day106
Inboxes needed4
Domains needed2
Leads to scrape & verify741
MONTHLY COST BREAKDOWNUSD
Domains (2 × amortized /yr)$2.33
Inboxes (4 × monthly)$14.00
Sequencer (flat)$97.00
Leads (741 × scrape + verify)$44.46
Total / month$157.79
UNIT ECONOMICSTHE TRUTH
Cost per email sent$0.071
Cost per reply$2.37
Cost per meeting booked$15.78
Cost per meeting held$21.04
How to read this:the funnel multiplies reply × positive × booked rates to connect emails and meetings — flip the mode to drive it from either end. Infrastructure is sized so no inbox ever exceeds your daily send cap, and domain count follows the inboxes-per-domain rule. Domain pricing is amortized from yearly to monthly. If cost per meeting looks high, the biggest lever is never volume — it's the reply rate.