| No. | Item | Definition |
|---|---|---|
| 1. | Accounts receivable follow-up | Follow-up on receivable payment |
| 2. | Action needed: invoice | Invoice needs attention |
| 3. | Action needed: payment | Payment needs attention |
| 4. | Balance due reminder | Reminder that balance is due |
| 5. | Billing follow-up | Follow-up about billing payment |
| 6. | Can you confirm payment? | Asking whether payment was sent |
| 7. | Checking in on invoice | Following up about invoice |
| 8. | Checking in on payment | Following up about payment |
| 9. | Checking on invoice status | Asking about invoice progress |
| 10. | Checking on payment status | Asking about payment progress |
| 11. | Circling back on invoice | Returning to invoice topic |
| 12. | Circling back on payment | Returning to payment topic |
| 13. | Confirm payment date | Request to confirm payment date |
| 14. | Courtesy payment reminder | Polite reminder as courtesy |
| 15. | Delinquent payment notice | Notice of late payment |
| 16. | Did you receive the invoice? | Asking if invoice arrived |
| 17. | Did you send the payment? | Asking if payment was sent |
| 18. | Expected payment date? | Asking when payment is expected |
| 19. | Final invoice reminder | Last reminder about invoice |
| 20. | Final notice: invoice due | Last invoice notice |
| 21. | Final notice: payment due | Last notice before escalation |
| 22. | Final payment reminder | Last reminder before escalation |
| 23. | Following up on invoice | Checking status of invoice |
| 24. | Following up on payment | Checking status of payment |
| 25. | Friendly follow-up on payment | Warm check-in about payment |
| 26. | Friendly invoice reminder | Warm reminder about invoice |
| 27. | Friendly payment reminder | Polite reminder about payment |
| 28. | Gentle payment reminder | Soft reminder to pay |
| 29. | Invoice due date passed | Invoice due date has passed |
| 30. | Invoice due soon | Invoice payment is due soon |
| 31. | Invoice due this week | Invoice due within the week |
| 32. | Invoice due today | Invoice payment is due today |
| 33. | Invoice due tomorrow | Invoice payment due tomorrow |
| 34. | Invoice follow-up | Checking on an unpaid invoice |
| 35. | Invoice now overdue | Invoice has passed due date |
| 36. | Invoice payment due | Invoice payment is due |
| 37. | Invoice reminder | Reminder about a sent invoice |
| 38. | Invoice update requested | Request for invoice status |
| 39. | Kind reminder about invoice | Polite note about invoice |
| 40. | Late invoice notice | Notice about overdue invoice |
| 41. | Late payment reminder | Reminder about late payment |
| 42. | Let us know invoice status | Share current invoice status |
| 43. | Let us know payment status | Share current payment status |
| 44. | One last invoice reminder | Final reminder about invoice |
| 45. | One last payment reminder | Final reminder to pay |
| 46. | Open invoice reminder | Reminder about open invoice |
| 47. | Outstanding balance due | Unpaid balance must be paid |
| 48. | Outstanding payment reminder | Reminder about unpaid payment |
| 49. | Overdue invoice reminder | Reminder for an overdue invoice |
| 50. | Overdue payment notice | Notice that payment is overdue |
| 51. | Past due payment reminder | Reminder for overdue payment |
| 52. | Payment due reminder | Reminder that payment is due |
| 53. | Payment reminder | Reminder to pay an invoice |
| 54. | Payment still outstanding | Payment remains unpaid |
| 55. | Payment update requested | Request for payment status |
| 56. | Please advise on payment | Request for payment update |
| 57. | Please confirm payment | Request to confirm payment |
| 58. | Please confirm receipt | Request to confirm invoice received |
| 59. | Please pay invoice | Request to pay invoice |
| 60. | Please remit payment | Request to send payment |
| 61. | Polite payment follow-up | Courteous payment check-in |
| 62. | Quick invoice follow-up | Brief check-in about invoice |
| 63. | Quick payment reminder | Brief reminder about payment |
| 64. | Reaching out about invoice | Contacting you about invoice |
| 65. | Reaching out about payment | Contacting you about payment |
| 66. | Reminder to settle balance | Request to clear balance |
| 67. | Reminder to settle invoice | Request to clear invoice |
| 68. | Reminder: invoice due | Reminder that invoice is due |
| 69. | Reminder: payment due | Reminder that payment is due |
| 70. | Remittance requested | Request for payment remittance |
| 71. | Request for invoice update | Asking for invoice progress |
| 72. | Request for payment update | Asking for payment progress |
| 73. | Resolve outstanding invoice | Take care of unpaid invoice |
| 74. | Second payment reminder | Another reminder to pay |
| 75. | Send payment update | Provide a payment status update |
| 76. | Settle your outstanding balance | Pay the unpaid balance |
| 77. | Share payment status | Tell us payment progress |
| 78. | Still waiting on invoice payment | Invoice payment still pending |
| 79. | Still waiting on payment | Payment is still pending |
| 80. | This invoice remains unpaid | Invoice has not been paid |
| 81. | Touching base on invoice | Casual follow-up about invoice |
| 82. | Touching base on payment | Casual follow-up about payment |
| 83. | Unpaid balance reminder | Reminder about unpaid balance |
| 84. | Unpaid invoice reminder | Reminder about unpaid invoice |
| 85. | Update us on invoice | Provide invoice information |
| 86. | Update us on payment | Provide payment information |
| 87. | Urgent invoice follow-up | Important invoice check-in |
| 88. | Urgent payment reminder | Important reminder to pay |
| 89. | Urgent: invoice overdue | Overdue invoice needs attention |
| 90. | Urgent: payment overdue | Overdue payment needs attention |
| 91. | We are awaiting payment | Payment is still pending |
| 92. | We are awaiting remittance | Remittance is still pending |
| 93. | We have not received payment | Payment has not arrived |
| 94. | We have not received remittance | Remittance has not arrived |
| 95. | When can we expect payment? | Asking payment timing |
| 96. | When will payment be made? | Asking payment date |
| 97. | Yet to receive payment | Payment has not arrived yet |
| 98. | Your balance is overdue | Balance is past due |
| 99. | Your invoice is overdue | Invoice has not been paid |
| 100. | Your payment is overdue | Payment has not been made |
