29 Sep Newsletter Ad: beehiiv vs Substack for Newsletter Advertising

beehiiv is usually the better choice for newsletter advertising if you want structured ad buying, clearer performance data, and built-in monetization tools. Substack is stronger when the ad depends on a writer’s personal trust, niche audience, and editorial voice.

TLDR: Choose beehiiv if you want ad network access, campaign tracking, segmentation, and newsletter growth tools in one place. Choose Substack if you are sponsoring a creator whose audience already treats them like a favorite columnist. For example, a SaaS brand spending $2,000 might prefer beehiiv for testing ads across 4 newsletters with 25,000 total subscribers, while a book publisher may get better results from one trusted Substack writer with a 48% open rate and a deeply loyal readership.

Why this comparison matters

Newsletter ads are not just banner ads stuffed into inboxes. They work because readers opted in. They expect taste, context, and some level of trust. That makes the platform behind the newsletter more important than it first appears.

beehiiv was built with growth and monetization in mind. Its tools feel closer to a newsletter business platform. Substack was built around writers, paid subscriptions, and community. Its ad model is less formal, but its creator relationships can be powerful.

So the better platform depends on what you are buying: performance, trust, scale, or influence.

beehiiv for newsletter advertising

beehiiv is attractive to advertisers because it treats newsletters like media properties. Publishers can run ads, join monetization programs, build referral systems, and track audience growth from one admin area.

For advertisers, the main appeal is structure. You can work with newsletters that are already thinking about ad inventory, placement, sponsorship pricing, and performance reports.

• Best for: SaaS brands, ecommerce, finance tools, AI products, apps, B2B services, and performance-focused campaigns.
• Ad strength: Easier reporting and campaign planning.
• Publisher strength: Better monetization systems without needing five extra tools.
• Weak spot: Not every beehiiv newsletter has the same reader loyalty as a personality-driven Substack.

beehiiv’s Ad Network can help publishers monetize without spending hours pitching sponsors. That matters. Smaller publishers often hate sales calls, media kits, and awkward rate negotiations. beehiiv reduces some of that friction.

From the advertiser side, this can mean cleaner execution. You care about open rate, click rate, list size, niche, placement, and cost per click. beehiiv makes those numbers easier to request and compare.

Still, do not treat beehiiv as magic. A 60,000-subscriber newsletter with weak engagement may underperform a 7,000-subscriber newsletter with obsessed readers. Ask for recent issue data. Not lifetime averages. Not vanity screenshots.

Substack for newsletter advertising

Substack is a different animal. It is less like an ad platform and more like a network of individual voices. Many Substack readers subscribe because they care about the writer, not because they want a polished media product.

That can make a sponsorship feel more personal. A trusted analyst recommending a tool can outperform a generic placement in a larger newsletter. The tradeoff is that buying ads on Substack often takes more manual work.

It drives me crazy that Substack sponsorships can still turn into email threads, rate cards, shared docs, and manual follow-ups. For a one-off campaign, that is fine. For twenty placements, it gets tiring fast.

• Best for: Books, courses, media launches, political products, investing tools, creator services, and niche communities.
• Ad strength: High trust between writer and reader.
• Publisher strength: Simple writing, paid subscriptions, comments, and community tools.
• Weak spot: Less standardized ad buying and fewer built-in sponsor workflows.

Substack works best when the sponsor fits the writer’s topic. A productivity app in a thoughtful solo-founder newsletter may do well. A random shoe discount in a philosophy newsletter? Probably not.

Ad performance: what numbers should you expect?

Newsletter ad results vary a lot. Audience quality beats list size almost every time. Still, some rough benchmarks help.

• Open rates: Strong newsletters often sit between 35% and 55%. Anything below 25% needs a closer look.
• Click rates: Many sponsorships land between 0.3% and 1.5% of total sends.
• CPM pricing: Niche newsletters may charge from $25 to $100 CPM, depending on audience value.
• Flat fees: Smaller creators may charge $150 to $1,500 per placement.

Here is a simple case. A cybersecurity startup sponsors two newsletters. One beehiiv newsletter has 30,000 subscribers, a 38% open rate, and a 0.6% click rate. That produces about 180 clicks. A Substack writer has only 9,000 subscribers, but a 52% open rate and a 1.4% click rate. That produces about 126 clicks.

The beehiiv placement wins on volume. The Substack placement may win on intent. If the Substack writer is highly trusted by security buyers, those 126 clicks could convert better.

Audience targeting and data

beehiiv has the edge for audience management. Publishers can segment readers, track growth sources, and use built-in analytics. That helps advertisers ask better questions before paying.

You can ask:

• How many active subscribers opened at least one issue in the last 30 days?
• What percentage of readers are in the United States?
• Which topics get the most clicks?
• How did the list grow?
• Has the newsletter run sponsors before?

Substack analytics are useful but simpler. That is not always bad. Many creators prefer fewer dashboards and more writing. But advertisers who need tight targeting may feel boxed in.

Honestly, it feels like Substack makes you work harder to prove what you are buying. If a creator has a loyal audience, fine. If not, you may spend extra time chasing basic data.

Creative format and sponsor fit

On beehiiv, ads often feel more standardized. You may see sponsored blocks, short native placements, or dedicated sends. This is good for testing. It is easier to compare Campaign A against Campaign B.

On Substack, the best ad may not look like an ad. It might be a personal recommendation, a paragraph in the writer’s voice, or a sponsor note tied to the theme of the essay. That style can work beautifully, but it requires taste.

Bad sponsor copy fails on both platforms. Readers can smell lazy marketing. Avoid vague claims like “save time” or “grow faster.” Say what the product does. Say who it is for. Offer a real reason to click.

Pricing and buying experience

beehiiv tends to be better for repeatable buying. Publishers using beehiiv often think in terms of media kits, packages, ad slots, and reporting. That helps brands with monthly budgets.

Substack pricing is more uneven. One writer may charge $300. Another may charge $5,000. Some do not accept sponsors at all. Some only promote products they already use. That can be frustrating, but it also protects reader trust.

If you are an advertiser, do not buy based on subscriber count alone. Ask for:

• Recent open rates from the last 5 issues.
• Recent click rates on sponsor or link placements.
• Audience profile by job, interest, country, or buying power.
• Placement details including position, copy length, and send date.
• Exclusivity rules so competitors do not appear in the same issue.

Which platform should advertisers choose?

Choose beehiiv if you want a more organized ad channel. It is better for testing multiple newsletters, comparing metrics, and scaling what works. It fits brands that care about measurable clicks, repeat campaigns, and faster planning.

Choose Substack if the creator is the product. If readers trust that writer deeply, a sponsor mention can feel like a real recommendation. That is hard to fake, and it can be worth paying for.

For most advertisers, the smart move is not beehiiv or Substack. It is a split test. Put 70% of the budget into the platform that matches your goal, then use the remaining 30% to test the other. Track clicks, conversions, and reply quality. The replies matter. A few thoughtful responses can signal stronger buyer intent than a pile of cheap clicks.

Final recommendation

If you need predictable newsletter advertising, start with beehiiv. If you need credibility with a specific niche, test Substack. The best results come from matching the message to the reader, not from picking the trendier platform.

Use beehiiv for structure. Use Substack for trust. Use real numbers to decide what gets the next dollar.