Is a cold email agency worth it?
Updated October 7, 2026. Numbers from Sales.co's conversion benchmarks, published October 6, 2026.
A cold email agency is worth it when one customer is worth more than the fee divided by the customers it brings in. On Sales.co's 2026 data a $2,000 month of 10,000 emails produces roughly 3 to 27 positive replies, which is $73 to $620 per positive reply. Sales.co is our own service, so read this page with that in mind. The figures below are arithmetic on our own past campaigns, not a promise for yours.
What this page adds: it turns an agency price into a cost per positive reply and a break-even customer value. The inputs are 336,257 contacts from 20 campaigns and Sales.co's own funnel (296 positive replies, 143 booked calls and 7 paying customers from 124,513 contacts). Every input is on one published page you can check.
What $2,000 a month buys
Sales.co's smallest plan sends up to 10,000 emails a month. In the benchmark study a contact received 1.86 emails on average, follow-ups included, so 10,000 emails reach about 5,400 new contacts. The table applies four positive-reply rates from the study, per contact.
| Scenario | Positive replies per contact | Positive replies from about 5,400 contacts | Cost per positive reply at $2,000 |
|---|---|---|---|
| Top quartile campaign | 0.51% | 27.4 | $73 |
| All 20 campaigns pooled | 0.29% | 15.6 | $128 |
| Median campaign | 0.11% | 5.9 | $338 |
| Bottom quartile campaign | 0.06% | 3.2 | $620 |
The quartiles describe the 15 campaigns in the study with 5,000 or more contacts. The pooled rate (0.29%) is more than twice the median (0.11%) because four campaigns sit above 0.5%. If you compare a quote with a published average, the median is the fairer yardstick.
What a customer has to be worth
A positive reply is not a customer. In Sales.co's own campaign 296 contacts replied positively, 143 companies booked a call and 7 had become paying customers by October 6 (2.4% of positive replies, or 1 in 42). That is a floor, because the most recent bookings are still deciding, and with 7 customers the true rate could be well above or below it. Using it for every scenario gives the customer value at which a $2,000 month pays for itself.
| Scenario | Paying customers per month at 1 in 42 | Break-even value of one customer |
|---|---|---|
| Top quartile campaign | 0.65 | $3,085 |
| All 20 campaigns pooled | 0.37 | $5,425 |
| Median campaign | 0.14 | $14,301 |
| Bottom quartile campaign | 0.08 | $26,219 |
Read the last column as: if your average customer is worth more than that in revenue or gross profit over the time they stay, the fee is covered in that scenario. Sales.co's own offer starts at $2,000 a month, so a customer who stays about seven months pays the median row's break-even value in revenue. Your offer, price point and sales cycle set your own rate. For booked calls alone, Sales.co's campaign produced one per 871 contacts, about 6.2 a month from about 5,400 contacts.
When it is worth it
- One customer is worth at least the break-even value in the table for the scenario you believe, which is $5,425 at the pooled rate and $14,301 at the median campaign.
- Someone on your side can answer 5 to 15 new conversations a month within a day.
- Your market has about 5,400 reachable contacts a month to keep a campaign fed, and a decision maker you can name.
- You can wait three months before judging: 34% of Sales.co's bookings came more than 30 days after the first email.
When it is not
- Your average deal is smaller than the median break-even value and cannot be raised.
- Nobody can take the calls, or replies would sit for days.
- The market is small: a few hundred accounts are better reached by hand.
- You need results inside a month. In Sales.co's own campaign 46% of bookings came within 7 days, so 54% took longer.
What the numbers leave out
They come from 20 B2B campaigns run on Sales.co's platform between March and August 2026. Client calls land in the clients' calendars, so Sales.co can follow a contact to a booking only in its own campaign. Rates differ by company size (positive replies were 0.48% at companies with 1 to 10 employees and 0.07% at 1,001 to 5,000) and by seniority. Per-email rates are lower than per-contact rates: 971 positive replies on 627,085 emails is 1 per 646 emails. Sales.co does not guarantee a number of replies or meetings.
Where to go next
How to choose a cold email agency · cold email agency vs SDR · cold email agency cost · cold email response rates
Sources
- Sales.co's conversion benchmarks: 336,257 contacts, 627,085 emails, 20 campaigns, first emails March 6 to August 31, 2026; own campaign 124,513 contacts. Read October 7, 2026.
- Sales.co pricing: sales.co/pricing, read October 7, 2026.
FAQ
How many replies does a cold email agency get for $2,000 a month?
On Sales.co's data, 10,000 emails reach about 5,400 contacts at 1.86 emails per contact. At the pooled positive-reply rate (0.29% of contacts) that is about 16 positive replies a month; at the median campaign (0.11%) about 6. These are past campaigns, not a forecast for yours.
What is a good cost per lead for cold email?
In this arithmetic a positive reply costs $128 at the pooled rate and $338 at the median campaign, on a $2,000 plan. A positive reply is not yet a meeting: in Sales.co's own campaign 296 positive replies led to 143 booked calls and 7 paying customers.
How long does it take for cold email to pay back?
In Sales.co's own campaign the median booking came 9 days after the first email, and 34% of bookings came more than 30 days after. Sales cycles then add to that. Plan on at least three months before judging a campaign.
When is a cold email agency not worth it?
When one customer is worth less than the fee divided by the customers a month produces. Also when nobody can answer 5 to 15 new conversations a month, or when your market has too few reachable contacts to sustain 5,000 new contacts a month.
Can I get the same result with software and no agency?
You can, if someone on your team owns list building, domains, warmup, copy, replies and deliverability every week. See cold email tools vs a managed service.