Every freelancer and agency owner knows the feeling: an invoice is overdue, you’ve already followed up once or twice, and you’re stuck wondering whether to send another reminder or wait.

CollectFlow removes that decision. Every morning, it checks your overdue invoices, reviews your Gmail conversations, and only drafts or sends a follow-up when it actually makes sense-so you avoid awkward, redundant reminders.

How it works

1. Connect - Link your Google Sheet, Gmail, and OpenAI.
2. Choose a preset - Pick Relaxed, Normal, or Aggressive.
3. Relax - CollectFlow checks overdue invoices daily, drafts or sends reminders when appropriate, and sends a Slack summary.

Setup time: ~15-20 minutes.

What it does:

• Scans Google Sheets for overdue invoices automatically
• Reads Gmail to check if you already reached out
• AI decides: send a reminder, save a draft, or skip
• Delivers a daily Slack summary

What you get:

• Complete n8n workflow JSON (import in one click)
• Full setup documentation
• Email templates for all reminder stages
• Draft mode (review before sending) or full auto-send

Perfect for:

• Freelancers & consultants invoicing multiple clients
• Small agencies managing accounts receivable
• Bookkeepers offering collections as a service
• n8n agencies wanting a ready-to-resell product

14-Day Money-Back Guarantee
If CollectFlow does not save you time chasing invoices within 14 days, email us for a full refund - no questions asked.