I've been working on https://webhook.site since 2016 when I posted it here on HN. In fall 2023, I quit my job to work on it full time, and it's one of the best decisions I've ever made. I have around 1400 subscribers, which is enough to pay myself a good salary. I've not done any funding or marketing so far.
Wow, I use your service all the time for misc testing and it's fantastic. Lean, responsive, and straight forward. I honestly didn't realize there way any paid option until I read this and took a look around the website to find it (I completely missed the upgrade button in the upper right).
I figured I'd mention that from a user's perspective to give you a data point. Great service!
I've not been able to reproduce this in neither Safari nor Chrome (https://sf.gl/share/1707213387.mp4), curious to know which browser you're using. Thanks!