Newsletter Sponsorship Price Calculator

Turn your subscriber count, open rate and a target CPM into a defensible price per sponsorship slot, for newsletter operators building a rate card.

Your estimate

Expected opens per send...

Suggested price per slot...

Effective price per 1,000 subscribers...

Monthly revenue if each send sells one slot...

Estimates only. Assumptions are listed below, and you can change every input.

Most newsletter operators price sponsorships by gut feel or by copying a bigger publication, then either scare sponsors off or leave money on the table. A price you can explain in one sentence is easier to sell and easier to raise later.

This calculator prices a slot on opens, not raw subscribers, because opens are what a sponsor actually pays for. It multiplies your expected opens per send by the CPM you choose, then applies a placement factor for where the ad sits in the email. Change the CPM to match what your niche supports; the tool does not know your market, you do.

How to use this tool

Enter your active subscriber count and your recent average open rate.
Set the CPM you want to charge per 1,000 opens and pick the placement you are pricing.
Read the suggested price per slot and the monthly potential, then round to a clean number for your rate card.

What the math assumes

Price is based on expected unique opens (subscribers times open rate), not on total subscribers.
Placement factors are assumptions you can argue with: primary 100%, secondary 60%, classified 35% of the primary price.
The CPM default of $30 is a starting point, not a benchmark; replace it with what your niche and sponsor demand support.
Monthly potential assumes one slot per send sold at full price with no discounts.
Open rate is treated as stable across every send in the month.

Frequently asked questions

Should I price on subscribers or on opens?

Opens. Sponsors care about eyeballs, and pricing on opens protects you when a sponsor compares your list to one with inflated subscriber counts. The tool also shows the effective price per 1,000 subscribers so you can quote either way.

What CPM should I use?

There is no universal number. Niche B2B lists with buyers in seats can command far more than broad consumer lists. Start with what a sponsor in your space pays for a similar audience elsewhere, test a number, and raise it when slots sell out.

Why does the placement factor matter?

A mid-email or footer ad gets fewer eyes than the top slot. Charging a fraction of the primary rate keeps your rate card consistent and gives budget-limited sponsors a way in.

Link to this toolhttps://adslotly.com/tools/newsletter-sponsorship-price/

Free for readers and publishers alike. If you cite the result in an article, a link to this page helps others find it.

More free tools from AdSlotly

Sponsorship Inventory Revenue Planner: Estimate monthly and 12 month sponsorship revenue from your send cadence, slots per issue, price and realistic sell-through, for newsletter operators planning a budget.
Newsletter Sponsor Break-even Calculator: Work out how many conversions a newsletter sponsorship needs to pay for itself, for sponsors evaluating a buy and operators justifying their rate.

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