This week convinced me invoice tools break on reminder #2, not invoice #1

I spent this week reading a bunch of late-payment and invoicing threads here. Same pattern every time: sending invoice #1 is easy, marking paid is easy enough, the messy part is day 9 when the client goes quiet and you have to decide whether reminder #2 should be soft, firm, or proof-heavy.

I started building ChaseFlow because thats the bit that kept turning into manual memory work for me. Different clients need different follow-up paths, and most tools still stop at sent, overdue, paid.

If youre dealing with the same thing, I put the waitlist here: https://chaseflow-ten.vercel.app?utm_source=ih&utm_medium=post&utm_campaign=ih-roundup-2026-06-07