Referlist

Received 393 upvotes in total. Got an old co-worker to hunt me so that his followers were notified. The product was a good match for the ProductHunt audience since it's targeted at entrepreneurs and builders, so it saw good organic interest. Once you're top 5 you get featured in the newsletter. 100+ users and 1 paying customer in first day

Shared it on Hacker News, Product Hunt, Reddit and other communities which might find this helpful. Before this, spent a week beta testing it with friends who are builders and are working on landing pages of their own to work out bugs and test the UX