I built a Zapier integration for my solo SaaS. Here's every decision I made

I am junior full-stack software engineer in Durban, South Africa. I work full-time and build SaaS products after hours. PayChasers is one of them. It's a payment chasing tool for anyone who's owed money and tired of asking twice. Today I submitted it to Zapier's partner program. Here's exactly how it went and what I would do differently. What PayChasers does PayChasers handles chasing payment reminders for invoices, rent, deposits, failed payments, and personal debts — anything where someone owes you money and you'd rather not send awkward reminders yourself. You add a chase. You choose how to handle it. Send a follow-up manually when you're ready, or turn on Auto Chase and let PayChasers handle the escalation for you: friendly nudge, due today, overdue, firm. Email or WhatsApp. The tone sharpens as the payment ages. You stay in control of every message. Nothing goes out without your templates, your tone, your timing. It works. But the product lives in isolation. If someone tracks invo