Long term HN user @ezekg also runs this https://keygen.sh/ if that might suit your needs (i.e. If you want to separate out licensing logic from the payment logic). - Source: Hacker News / 9 days ago

Keygen | Front-end Engineer | Full- or part-time | Remote (US only) | https://keygen.sh Keygen is an open, source-available software licensing and distribution API built and run by myself. I'm a bit stretched thin in terms of front-end and support. I have a big front-end redesign code-named Portal on the roadmap that I haven't been able to make much progress on over the last couple years. I'm looking for somebody... - Source: Hacker News / 28 days ago

Absolutely lovely website you have at https://keygen.sh/ Did you write that as well or outsource it? - Source: Hacker News / about 2 months ago

Took me a bit to realize it's licensing as in managing enterprise license keys 'C1B6DE-39A6E3...', not licensing as in MIT/GPL/etc. https://keygen.sh/ Does anyone know a minimal, alternative licensing solution appropriate for a tiny startup? One where the license key is the only form of user authentication. Is there a cheap service available? Or is it easy to roll a custom solution. - Source: Hacker News / about 2 months ago

I run a business called Keygen [^0], and own the @keygen namespace on npm. We’re working on a Node SDK, so this isn’t good to hear. I’ll open up a discussion with them and see what we can do. [^0]: https://keygen.sh. - Source: Hacker News / about 1 year ago

Do you guys have any feedback about https://letterwell.co allowing to find sponsors? I would be interested to know if it's effectively used by some newsletter creators. Source: over 2 years ago

I haven't found one for larger newsletters, would be a great resource.. I know of some sites that allow newsletter owners to sign-up to find advertisers/sponsors: https://store.tryletterhead.com/ and https://letterwell.co/. Source: about 3 years ago

Hey, I'm looking for newsletters where I can advertise my website and I wanted to ask if you know cool publishers who offer this in their newsletters? (something different from letterwell.co) Thanks in advance! Source: about 3 years ago

Been working on https://letterwell.co for a while now. Got 400+ email newsletters on the site and it's growing pretty steadily. Seen some unexpectedly good results for advertisers reporting higher ROI than Fb/IG ads... Source: about 3 years ago

A great email marketing resource is https://letterwell.co Loads of super successful email newsletters on there making quite a lot of money. Source: about 3 years ago