How to sponsor a newsletter

A newsletter sponsorship puts your product inside an email that readers asked to receive, written up by someone they read every week. You buy a slot in one issue or a run of issues, and you pay a flat fee, per click, or per thousand readers. The hard part is knowing how many people actually read it.

What placements can you buy in a newsletter?

You can buy four kinds of newsletter placement: a primary slot, a secondary slot, a classified, or a dedicated send. They differ in where the ad sits and how much of the reader's attention it gets.

The primary slot sits near the top of the issue. A secondary slot sits further down, between sections. A classified is a line or two of text with a link, grouped with other small ads near the bottom. A dedicated send is a whole email about your product, sent to the list on its own.

Paved, a newsletter ad marketplace, publishes pricing guidance for newsletter writers that ties each placement to the primary rate. Its July 2026 guidance looks like this:

Buy the primary slot for a first test. Secondary slots are cheaper but get skimmed, and classifieds work best for a simple offer such as a free tool or a hiring post. Save dedicated sends for a launch, and only on a list you have already tested.

Should you pay a flat fee, CPC, or CPM?

Pay a flat fee for direct deals with individual newsletters, and use cost per click (CPC) or cost per mille (CPM) when you buy through an ad network. Each model shifts the risk between you and the writer.

A flat fee is the simplest deal to sign. But if the issue underperforms, you still pay. A CPM deal needs both sides to agree on the base. Some writers count subscribers, and the beehiiv Ad Network counts "unique, human opens" per send, according to beehiiv's Ad Network FAQ. Agree on the base in writing.

CPC moves the risk to the publisher. beehiiv bills advertisers on its own measure, payable clicks. It starts with unique subscriber clicks inside the campaign's payout window, removes clicks flagged as automated or invalid, and weights the rest by a graduated click-quality signal whose exact weighting it doesn't publish. A stricter pass-or-fail check, verified clicks, flags the highest-confidence clicks but doesn't set the bill. Ask any network how it defines a billable click before you compare its CPC with another network's.

For a first test, take a flat fee, then work out the cost per unique click afterward. That number tells you whether to buy again.

How much does a newsletter sponsorship cost?

Expect a primary slot on a 10,000-subscriber newsletter to start around $250 to $500, based on the pricing rule Paved gives publishers: 2.5% to 5% of the subscriber count in dollars. That is Paved's suggested starting price for writers, not an average of what sponsors actually pay. In CPM terms, it works out to $25 to $50 per thousand subscribers, which makes it a fair check on any quote you receive.

Paved's examples run from about $75 to $150 for 3,000 subscribers, $125 to $250 for 5,000, and $250 to $500 for 10,000. It tells writers to aim higher when readers skew wealthy or engagement beats their category. In one worked example, Paved says a 20,000-subscriber marketing newsletter with a 60% open rate, against a 40% category average, could justify a $35 to $40 CPM.

To convert any quote to a CPM, divide the fee by the subscriber count and multiply by 1,000. Say a newsletter with 12,000 subscribers asks $900. That is $75 per thousand subscribers, well above the $300 to $600 that Paved's rule suggests for a list that size. Ask why. A strong answer sounds like this: "Last quarter, our sponsors averaged 300 unique clicks per primary slot." Then you know you are paying $3 per click, and you can decide whether that beats your other channels.

Rates move, and Paved tells writers with high-value readers to charge more. The sponsorship cost calculator and the guide to creator sponsorship costs cover other pricing models.

Why are newsletter open rates less reliable now?

Newsletter open rates got less reliable after Apple launched Mail Privacy Protection, which, when turned on, loads email images in the background whether or not the reader opens the message. Opens are measured with a tiny image, so a preloaded image looks like an open.

Apple announced Mail Privacy Protection in June 2021 alongside iOS 15. On its Mail Privacy Protection page, Apple says the Mail app downloads remote content in the background by default, "regardless of whether you engage with the email." It also hides the reader's IP address, so location data in email reports gets less accurate too.

Mailchimp tells its own customers that this produces "inflated and inaccurate open rates", and that clicks are not affected. Some email platforms now try to filter out these machine opens. beehiiv, for example, bases its CPM on "unique, human opens" without publishing how it tells them apart.

So a newsletter that reports a 65% open rate may be telling the truth, or may have a lot of Apple Mail readers. You can't tell from the number. Treat opens as a rough signal and make clicks the basis for your decision.

How do you verify a newsletter's real audience?

Verify a newsletter's audience by asking for click data from past issues and testing with one tracked placement before you commit to more. Subscriber counts and open rates are the easiest numbers to inflate, so weight them least.

1. Subscribe yourself. Check that issues arrive on the stated schedule and that sponsors appear the way the writer describes.
2. Ask for a screenshot from the email platform, not a media kit, covering the last five to ten sends. It should show delivered emails, unique clicks, and click rate.
3. Ask how the list grew. Lists built through giveaways or paid recommendation swaps can be large and quiet.
4. Ask for unique clicks on sponsor links in recent issues. A writer who tracks this for sponsors will have it ready.
5. Ask for two past sponsors you can contact, and ask them one question: did you rebook?
6. Run one placement with a tracked link, a link tagged with UTM parameters so your analytics can tell which visits came from that newsletter, before you buy a package.

If the writer won't share platform screenshots, move on. Plenty of good newsletters will. The guide to writing a creator brief has a section on the audience data to request up front.

Where can you buy newsletter ads at scale?

You can buy newsletter ads at scale through ad networks and marketplaces that sell placements across many newsletters at once. Each has its own pricing model and its own way of counting results.

On the beehiiv network, the advertiser picks CPM or CPC for each opportunity, clicks are tracked for 72 hours after the send, and only clicks on the approved creative count. Paved says it reaches more than 3,000 newsletters with 253 million subscribers and handles booking and payment in one place.

SparkLoop's Partner Network suits brands that run their own newsletter, since you pay only for new subscribers. Passionfroot uses an AI agent to match brands with creators and handles payment through its own wallet.

Networks are fine for reach. For the best newsletters in a narrow niche, write to the writer directly, because a network may not carry them.

How do you write newsletter ad copy that sounds like the writer?

Write newsletter ad copy by giving the writer facts and letting them write the ad in their own voice. Readers trust the writer's tone, and copy that sounds like a press release breaks it.

Send a short brief with three facts about the product, one offer, one link, and the claims they must not make. Add a sentence on who the product is for. Then ask for a draft and review it for accuracy, not style.

Say you sell a time-tracking app and sponsor a newsletter for freelance designers. Your brief says the app tracks billable hours from the menu bar, exports invoices, and has a 30-day free trial. The writer might open with a line about losing an hour of billable work every week to bad notes. That opening came from knowing their readers, and you could not have written it.

Keep it short. One idea, one link, one call to action. A headline in the writer's style helps more than a logo. Ask them to say plainly that the slot is sponsored, and see the disclosure rules guide for wording that meets FTC and ASA standards.

How do you measure a newsletter sponsorship?

Measure a newsletter sponsorship by cost per unique click and cost per customer, tracked through a UTM link and a "How did you hear about us?" question. Opens tell you little, for the reasons above.

Give each newsletter its own link and, if you sell online, its own discount code. Ask buyers where they heard about you and accept free text, since people will type the newsletter's name even when they didn't click. Compare each newsletter's cost per customer against your other channels.

Give a newsletter two or three issues before you judge it. One issue is a small sample, and it can land on a holiday or a slow news day. The guide to measuring sponsorship ROI shows the full calculation.