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Free Tool
Reverse-engineer your outbound targets from revenue goals. Find out how many prospects, senders, and domains you actually need before you burn your deliverability trying.
Launch CalculatorMost outbound teams set their daily send volume based on vibes. Someone decides "50 emails a day sounds right" and then wonders why pipeline is light three months later.
This calculator flips it. Start with the revenue number your team needs to hit, and it works backwards through every conversion step to tell you exactly what your outbound operation needs to look like. How many prospects. How many senders. How many domains. How many weeks until you have burned through your addressable market.
It also flags when the maths does not work. If your target requires 200 sends per day from a single inbox, you will know before you tank your domain reputation, not after.
Standard Outbound uses industry benchmarks for cold email: 1-3% reply rates, 20-30% reply-to-meeting conversion. This is where most teams operate.
Signal-Driven Outbound models what happens when you layer intent data, job changes, technographic signals, and conversational intelligence into your targeting. Reply rates jump to 5-15%. Meeting conversion doubles. The difference in required volume is significant, and that is the entire point.
The calculator uses a reverse funnel model. It starts with your quarterly revenue target and works backwards.
Revenue target divided by your average deal size gives you the number of closed deals needed. Divide that by your win rate and you have got the opportunities required. Keep dividing through your meeting-to-opportunity rate, reply-to-meeting rate, and positive reply rate to get the total prospect volume.
From there, it calculates your daily send requirement based on your number of active senders, domains, and sending days per week. It checks this against a safe sending threshold of 40 emails per sender per day and flags when you are over.
The TAM sustainability check divides your total addressable market by the prospect volume needed per quarter. If you will exhaust your entire market in two quarters, that is a problem worth knowing about before you start.
Standard Outbound reflects typical cold outreach performance: 1-3% positive reply rate, 20-30% reply-to-meeting, 40-60% meeting-to-opportunity, and 20-30% win rate.
Signal-Driven Outbound reflects what we see when teams use intent signals, technographic data, and conversational intelligence to prioritise and personalise: 5-15% positive reply rate, 35-55% reply-to-meeting, 55-75% meeting-to-opportunity, and 25-40% win rate.
The gap between these two modes is the operational case for investing in signal infrastructure. It is not about sending more. It is about sending better.
This calculator shows you what is possible when outbound is built on signals rather than spray-and-pray. GTM Layer builds the systems that make it real: intent data pipelines, enrichment workflows, conversational intelligence loops, and CRM automation that puts the right signal in front of the right rep at the right time.
Talk to us about your outbound operationView the source code on GitHubThere is no universal answer, but deliverability best practice caps it at 40 emails per sender account per day. This calculator works backwards from your revenue target to tell you how many senders you need to stay within that limit.
Standard cold outbound typically sees 1-3% positive reply rates. Signal-driven outbound, where you are targeting based on intent data and personalising with real context, pushes that to 5-15%. The difference in required volume is dramatic.
Start with your revenue target, divide by deal size to get deals needed, then work backwards through your win rate, meeting-to-opportunity rate, reply-to-meeting rate, and reply rate. This calculator does that maths automatically.
Signal-driven outbound uses intent data, job changes, technographic signals, and conversational intelligence to identify and prioritise prospects who are more likely to respond. Instead of sending the same volume to a cold list, you send less to a warmer, more relevant audience.
It depends on your volume. Each domain should have 2-3 sender accounts, and each sender should cap at 40 sends per day. This calculator tells you exactly how many domains and senders your target requires.