Skip to main content
InventorySpread

About InventorySpread

InventorySpread is a two-sided marketplace for B2B newsletter ad inventory. We list newsletters that have sponsorship slots available, take inquiries from advertisers who want to reach those audiences, and broker the booking end-to-end. Our take rate is 10–20% per deal (default 15%, disclosed upfront on every quote). Browsing the directory is free. Listing a newsletter is free. Sending an advertising inquiry is free.

Who we built this for

Operators of B2B newsletters with 5,000–500,000 engaged subscribers spend hours every month chasing sponsor leads, qualifying advertisers, and negotiating slot prices. Advertisers spend the same hours trying to find newsletters that actually match their target audience. We sit in the middle, do the matching, and handle the booking coordination so both sides can focus on their own work.

How we make money

The broker fee, disclosed on every booking quote (typically 10–20% of slot price). We do not charge platform fees, listing fees, subscription fees, or processing fees. There is no upsell. The marketplace stays free to browse and free to list because the only thing we charge for is matching, and only when a deal actually closes.

Why we don’t name the founder

The operator behind InventorySpread runs other newsletter properties. To keep editorial independence at those properties intact, we don’t publicly identify the founder. The legal entity is Northtide Data Holdings, LLC (Wyoming, USA). The Information Officer for data-subject requests is reachable at privacy@northtidedata.com — see /data-practices for details.

Sister properties