I kind of dislike sites with a video that auto-plays, but besides that the product works fine and I got a handful of posts where I'm going to write now.
I use a similar product for my marketing and here are the 2 things that would make me switch to yours:
- webhooks, sent immediately (instead of emails each 6 hours)
- expand to other socials / forums (HN, x, bluesky, ...)