Send automatic reminders for unpaid invoices before they escalate

flowchart TD trig(["daily overdue invoice check"]):::trigtime s0[("Pull unpaid invoices")]:::store s1[["Check each invoice overdue level"]]:::mi s2["Determine reminder needed"]:::task s3["Send reminder email"]:::task trig --> s0 s0 -->|"one per each unpaid invoice"| s1 s1 --> s2 gx{"× how overdue is the invoice"}:::gate s2 --> gx p00["Send friendly notice"]:::task gx -->|"friendly reminder"| p00 p10["Send urgent notice"]:::task gx -->|"urgent reminder"| p10 p20["Send final notice"]:::task gx -->|"final reminder"| p20 p00 --> s3 p10 --> s3 p20 --> s3 out[/"overdue clients reminded automatically"/]:::out pay{{"keeps cash flow moving without manual chasing"}}:::pay s3 --> out out --> pay classDef task fill:#e7f6fe,stroke:#34b8f0,color:#2c2a29 classDef svc fill:#f6f8fa,stroke:#7c8795,color:#2c2a29 classDef mi fill:#e7f6fe,stroke:#0079a8,color:#2c2a29,stroke-width:2px classDef human fill:#fff,stroke:#0079a8,color:#0079a8 classDef store fill:#f6f8fa,stroke:#0079a8,color:#2c2a29 classDef trig fill:#00a4eb,stroke:#0079a8,color:#fff,font-weight:bold classDef trigtime fill:#00a4eb,stroke:#0079a8,color:#fff,font-weight:bold classDef trigdata fill:#8ad4f5,stroke:#0079a8,color:#06314c,font-weight:bold classDef gate fill:#fff,stroke:#e8a23d,color:#6b4708,font-weight:bold classDef out fill:#1f9d6b,stroke:#167a53,color:#fff,font-weight:bold classDef pay fill:#06314c,stroke:#021f33,color:#fff