Newsletter Sponsorship Calculator

Work out what to charge sponsors for a newsletter ad. Enter your subscribers, open rate, and an editable CPM benchmark to get a suggested price per send — everything updates live and stays in your browser.

📖 How it works & FAQ

Subscribers

Open rate (%)

CPM low ($ per 1,000 opens)

CPM high ($ per 1,000 opens)

How newsletter sponsorships are priced

Most newsletter sponsorships are priced on a CPM basis — cost per thousand — but the smart way to do it is CPM on opens, not on raw subscriber count. A sponsor is really paying for attention, and an open is the closest thing to a guaranteed impression a newsletter can offer. Typical benchmarks run around $25–$50 CPM on opens for a general-interest list, and considerably higher for niche B2B audiences with real buying power. This calculator multiplies your subscribers by your open rate to get expected opens per send, then applies your CPM range to suggest a fair price for one sponsored send, plus your monthly sponsorship potential. Every number is editable, so you can plug in whatever benchmark fits your niche. Figures are estimates only, not professional or financial advice; real-world rates & fees vary widely by audience and market.

How to use it

Enter your current subscriber count.
Enter your average open rate as a percentage — your email platform reports this on every send.
Set the low and high CPM benchmarks. $25–$50 per 1,000 opens is a common starting range; adjust for your niche.
Add how many sponsored sends you plan to sell per month to see monthly revenue potential.
Read the suggested price range per send — results update live as you type.

FAQ

Why price on opens instead of subscribers?: Two lists of 10,000 can deliver very different value: one with a 55% open rate shows the ad to 5,500 people, one at 20% shows it to 2,000. Pricing on opens keeps your rate honest and defensible, and sponsors increasingly expect it.
What CPM should I charge?: Start inside the $25–$50 range and adjust for your audience. Niche professional lists (developers, finance, legal) often command $50–$100+ on opens, while broad consumer lists sit lower. Engagement, click rates, and past sponsor results all justify moving the number.
Should I quote a flat rate instead?: Yes — sponsors usually want one price per send. Use the CPM math privately to set that flat rate, and round to a clean number like $250 or $1,000.
Is my data uploaded anywhere?: No. The calculator runs entirely in your browser; nothing you type is sent to a server or stored.