Gumroad
Selling ebooks, templates and guides alongside your newsletter
Directory / Sponsorships & Monetization / Swapstack
Swapstack
Our verdict: One of the original newsletter sponsorship marketplaces. Worth a free signup to see what deals match your niche.
Best for
Finding sponsors and affiliate deals for small and mid-sized newsletters
Pricing
Pricing not listed on the homepage.
Source: official site
Website
Last checked
2026-10-18
Disclosure: We have no affiliate relationship with this vendor. StackKit is independent and not affiliated with Substack Inc. Spot an error? Email hello@stackkit.ink.