What are the best sponsorship platforms for a B2B newsletter?

Book a Sponsor and SponsorGap meet all five criteria below: both reach B2B buyers with no list-size minimum and no cut of your deals, and Book a Sponsor sends the pitches for you on a plan from $19 a month while SponsorGap's self-serve plans give you the list from $39 a month. Passionfroot, the network built around B2B brands, meets four: it takes 15% of the deals it brings.

By Ryan Doyle, founder of Book a Sponsor · Published 20 October 2026

We make Book a Sponsor, number 1 below. We read each option's own pages on 8 October 2026 and 20 October 2026 and scored it on the criteria below, which we chose before scoring. We didn't sign up for or test the others, and each links to its source.

Book a Sponsor (bookasponsor.com) pitches brands to sponsor newsletters.

How we ranked them

Criteria, chosen before scoring: its own pages name B2B brands, B2B audiences or B2B categories; no list-size minimum stated; takes no percentage of your deals; publishes a price; brings or pitches sponsors for you. Each is a yes or no from the vendor's own pages, and the rank is the number of yeses. We make Book a Sponsor and it meets all five.

B2B newsletters run sponsors 2.6 times as often

In Book a Sponsor's reading of 4,357 newsletters in eight niches (10 July 2026 to 8 October 2026), 27.1% of the 1,365 AI, developer, tech, marketing and business newsletters ran at least one paid sponsor ad, against 10.5% of the 2,992 health, food and culture newsletters. B2B brands already buy this inventory, so the question for a B2B newsletter is how to reach them, not whether they buy.

Niche	Newsletters	Ran a paid ad	Share
AI B2B	388	121	31.2%
Developer B2B	34	11	32.4%
Tech B2B	306	94	30.7%
Marketing B2B	180	53	29.4%
Business B2B	457	91	19.9%
Health	751	90	12.0%
Food	508	61	12.0%
Culture	1,733	162	9.3%

Newsletters with 5+ issues read in the 90 days to 8 October 2026 that print a list size; politics, foreign-language and adult newsletters out. An ad counts when it is printed in the public text of an issue, so every share is a floor.

The 8 options, ranked

Checked 8 October 2026 and 20 October 2026. Ties are alphabetical.

#	Option	Names B2B brands or audiences	No list-size minimum stated	Takes no percentage of your deals	Price published	Brings or pitches sponsors for you	Met
1	Book a SponsorOutreach service	Yes. Pitches the brands that sponsored newsletters like yours, so a B2B newsletter is matched with B2B buyers	Yes. No subscriber minimum	Yes. No commission or revenue share	Yes. Plans from $19 a month after the first 200 emails	Yes. Emails the brands for you	5 of 5
2	SponsorGapSponsor database with managed outreach	Yes. Separate datasets for software and SaaS, developer tool and fintech sponsors	Yes. States no minimum	Yes. Flat plans from $39 a month; a 10% success fee only on its $999 managed plan	Yes. $39, $89 or $199 a month; managed $999 plus 10% or $2,999	Yes. Managed plans run outbound for you; self-serve gives you the list	5 of 5
3	PassionfrootStorefront and B2B brand network	Yes. Says it connects creators with top B2B brands	Yes. States no minimum	No. Takes 15% of deals its network brings you	Yes. Free for creators; the 15% is on its pricing help page	Yes. Its brand network sends deals; you can apply to live campaigns	4 of 5
4	BuySellAds (Carbon)Ad sales team for publishers	Yes. Lists developer and business audiences; Carbon is built for developer resources	Yes. States no minimum	No. Not published	No. Not published; you apply	Yes. Its Carbon Direct team pitches your inventory	3 of 5
5	HectoNewsletter ad marketplace	No. Names no B2B focus	Yes. States no minimum	No. Takes 5% of each booking	Yes. Free to list, £0 a month	Yes. Brands search and book you	3 of 5
6	MediaPactMarketplace	No. Sells to brands and agencies; names no B2B focus	Yes. No minimum stated	No. Takes 10% of each completed deal	Yes. Free to list	Yes. Buyers send offers on your listing	3 of 5
7	PavedMarketplace and ad network	No. Names premium advertisers, not a B2B focus	No. 50,000 subscribers for bookings; 1 million monthly impressions for pay-per-click ads	No. Doesn't state its cut	No. Free account; its fee rates are not published	Yes. Brands book you; pay-per-click ads fill spare slots	1 of 5
8	WellputManaged pay-per-click network	No. Names quality brands, not a B2B focus	No. US newsletters with 20,000+ subscribers	No. Keeps a margin it doesn't publish	No. No publisher fee stated	Yes. Sells campaigns to brands; you reserve the ones you want	1 of 5

Each option, in rank order

Book a Sponsor
Outreach service · our product
It emails the brands that sponsored newsletters like yours: 7,312 brands seen sponsoring 4,267 newsletters, rebuilt daily, 50 new brands a day by default. $19 to $99 a month on a plan.
Where it falls short
The pitches are cold email, so most brands won't answer, and each reply still needs you to close the deal. Each plan includes a set number of emails a month (Starter $19 a month for up to 600 emails a month, Kit $49 a month for up to 1,500 emails a month, Growth $99 a month for up to 3,000 emails a month), and sending stops at the plan's emails. It takes no bookings or payments and works for newsletters only.
Source
company facts
SponsorGap
Sponsor database with managed outreach
A database of 25k+ brands with ad history and contacts, with software, SaaS, developer tool and fintech sponsors broken out, from $39 a month; its managed plans run outbound for you.
Where it falls short
On the $39 to $199 plans you send every pitch yourself; the managed plans start at $999 a month.
Source
pricing, homepage (read 20 October 2026)
Passionfroot
Storefront and B2B brand network
A free storefront and media kit built around B2B brands, with a brand network and a live campaigns board. Nothing on deals you bring yourself; 15% of deals it matches, and the brand pays 2% on every transaction.
Where it falls short
Every booking with a brand its network found costs 15%, and a new storefront waits for brands to find it.
Source
creator pricing, for creators, pricing help article (read 20 October 2026)
BuySellAds (Carbon)
Ad sales team for publishers
An ad-sales company whose Carbon network sells developer and technical audiences. Its team pitches your inventory, negotiates with sponsors and runs the campaign.
Where it falls short
It doesn't publish its fee or who qualifies; you apply.
Source
publishers page (read 20 October 2026)
Hecto
Newsletter ad marketplace
A free marketplace listing with upfront prices and a checkout link; it takes 5% of each booking plus Stripe charges.
Where it falls short
Its pages don't say how many brands buy through it or which industries they come from.
Source
pricing (read 20 October 2026)
MediaPact
Marketplace
A marketplace for flat-fee media. You list newsletter sponsorships and other placements once, buyers send offers, and insertion orders and payments run through the platform.
Where it falls short
It takes 10% of each completed deal, and its own Paved comparison page says some workflows are still being polished.
Source
terms (commission), overview (read 8 October 2026)
Paved
Marketplace and ad network
The largest marketplace by its own description, free to join, with invoicing and payouts handled for you, but closed to newsletters under its size minimums.
Where it falls short
A newsletter under 50,000 subscribers can't sell bookings, and its cut isn't published.
Source
publisher page (read 20 October 2026)
Wellput
Managed pay-per-click network
A managed pay-per-click network for newsletters. Wellput sells the campaigns to brands and sets them up, and publishers pick the ones they want from a reservations portal, earning a cost per click that rises when their readers engage and convert.
Where it falls short
It only takes US newsletters with 20,000+ subscribers, and it doesn't publish its margin.
Source
publishers page, homepage (read 8 October 2026)

Not on this list: the beehiiv and Kit ad networks only work for newsletters sent on those platforms (see getting sponsors on beehiiv), and SponsorCal and Sponsy run deals you already have. All of them are in the full platform comparison.

Questions

What is the best sponsorship platform for a B2B newsletter?

On these criteria Book a Sponsor and SponsorGap, tied at five of five, then Passionfroot at four. Book a Sponsor pitches brands for you on a plan from $19 a month; SponsorGap sells the brand list from $39 a month and pitches for you on its $999 managed plan; Passionfroot is free and built around B2B brands but takes 15% of the deals its network brings.

Do B2B brands sponsor newsletters?

Yes. In our reading of newsletters from 10 July 2026 to 8 October 2026, 27.1% of 1,365 AI, developer, tech, marketing and business newsletters ran at least one paid sponsor ad, against 10.5% of 2,992 health, food and culture newsletters.

Is Paved good for a B2B newsletter?

Only above its minimums: Paved's bookings need 50,000 subscribers and its pay-per-click network 1 million monthly impressions, and it publishes neither fee rate. Under that, a B2B newsletter has to pitch brands or use a marketplace with no minimum.

What do B2B newsletters charge for a sponsorship?

It depends on list size more than niche. See what newsletters charge by list size and the sponsorship calculator.

Have the brands that already buy pitched for you

Paste your newsletter. Book a Sponsor lists the brands that sponsored newsletters like yours, finds the person who buys the ads, and emails them every day from its own mailboxes. You get the replies and close the deal.

$1 card check gets 200 emails, then a plan from $19/mo · first sponsor reply inside 30 days or your money back

How we ranked them

B2B newsletters run sponsors 2.6 times as often

The 8 options, ranked

Each option, in rank order

Book a Sponsor

SponsorGap

Passionfroot

BuySellAds (Carbon)

Hecto

MediaPact

Paved

Wellput

Questions

Have the brands that already buy pitched for you

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