About

Newsletter sponsorship research is unnecessarily fragmented.

A buyer may need to check individual media kits, creator websites, booking platforms, and contact pages just to compare a few relevant publications. Prices are often hard to find, audience claims are presented inconsistently, and direct booking paths are scattered across the web.

SlotFee makes the public information easier to scan in one place.

SlotFee is not an ad network, agency, payment processor, or escrow service.

We do not sell inventory, negotiate campaigns, process sponsorship payments, guarantee availability, or take a transaction fee. Sponsors book directly with the publisher using the listed booking link.

Every SlotFee listing is selected for public, decision-ready sponsorship information.

We aim to show the publisher’s stated subscriber count and publicly listed primary sponsorship price. Rates, audience figures, formats, and availability can change, so buyers should confirm current terms with the publisher before booking.