You sent the invoice. Now you wait. A day passes. Three days. A week. Then you send the awkward message: "Hi, just checking if you got my invoice..." What If You Did Not Have to Guess? Now you do not. FreeInvoiceFlow just launched a new feature: Invoice Status Checker. Here is how it works: Create your invoice (no signup, no watermark, free) Click "Create Tracking Link" Get two things: Client Link (send to your customer) and Private Check Code (keep for yourself) Your client opens the link – they see only the invoice You go to "Check Status" page, enter your code You see: Viewed or Not Viewed + how many times + when No More Guessing Before: "Did they see it?" After: You know exactly when they opened it Before: "Should I follow up?" After: Check first. Follow up only if needed Before: Awkward emails After: Confident, data-backed messages Why I Built This Freelancers on Reddit told me the real problem is not creating invoices. It is what happens after. "The painful part is usually after the invoice is sent.…