The SlotFee Index
1 of 94 listings
Find the right audience
Filter ad slots by niche, subscriber count, and price.
Compare the numbers
See each publisher’s public audience size and primary sponsorship rate.
Book direct
Use the public booking link to contact or book with the publisher.
Have an audience with public sponsorship pricing?
List your newsletter subscriber size, flat rate options, and direct booking links on SlotFee completely for free.
SlotFee Guides
AI Newsletters to Sponsor: B2B Audiences for 2027
Looking to reach AI builders, technical teams, business leaders, and professionals evaluating artificial-intelligence tools? These sponsor-ready AI newsletters are relevant for AI software, developer platforms, data products, automation tools, healthcare technology, and B2B services.
- #B2B SaaS
- #Artificial Intelligence
- #AI Tools
- #Machine Learning
SlotFee
Finance and Fintech Newsletters for B2B Sponsorships
Looking to reach fintech operators, finance leaders, payments professionals, and financial-services decision-makers? These sponsor-ready finance and fintech newsletters are relevant for B2B software, payments platforms, embedded-finance products, compliance tools, and financial infrastructure brands.
- #B2B SaaS
- #Fintech
- #Financial Services
- #Payments
SlotFee
Newsletter Sponsors: Find B2B Publications That Accept Paid Placements
Find B2B newsletter sponsors with public audience data, flat sponsorship rates, and direct booking links. This guide highlights sponsor-ready publications for technology, marketing, HR, finance, and professional audiences.
- #Newsletter Sponsorship
- #B2B Advertising
- #Media Buying
- #Sponsorship Rates
SlotFee
5 B2B Marketing Newsletters to Sponsor in 2027
Looking to reach B2B marketers, growth leaders, revenue teams, and SaaS decision-makers? These five sponsor-ready B2B marketing newsletters are relevant for software companies, agencies, data platforms, sales tools, and services selling to professional marketing teams.
- #Newsletter Advertising
- #B2B Marketing
- #Growth Marketing
- #Revenue Operations
SlotFee
5 Software Engineering Newsletters to Sponsor in 2027
Looking to reach software engineers, technical leaders, and developer teams? These five sponsor-ready software engineering newsletters are relevant for DevTools, infrastructure platforms, AI coding tools, cloud products, security software, and B2B services.
- #Developer Tools
- #B2B SaaS
- #Software Engineering
- #DevTools
SlotFee
5 Cybersecurity Newsletters to Sponsor in 2027
Looking to reach security engineers, CISOs, cloud-security teams, and technical decision-makers? These five cybersecurity newsletters offer sponsor-ready placements for security platforms, DevSecOps tools, identity products, compliance software, and B2B infrastructure brands.
- #B2B SaaS
- #Cybersecurity
- #Cloud Security
- #DevSecOps
SlotFee
About the SlotFee Data Index
The SlotFee index is an open, unbloated data terminal built explicitly for growth marketers, CMOs, and corporate media buyers. By mapping out exact B2B newsletter demographics, subscriber sizes, and flat sponsor slot rates on a single screen, we completely eliminate the friction of discovering targeted advertising channels.
We do not operate as an escrow platform, ad network, or campaign broker. Our single utility is providing transparent pricing data and a direct-to-creator booking route—allowing you to intercept high-value business audiences and secure sponsorships without paying hidden platform transaction fees.
Frequently Asked Questions
Helping you get the most out of SlotFee.
© SlotFee 2026. All rights reserved