# Discovered Patterns — 2026-06-16 Session

## False Positive — AEG Service Response
- **Sender**: `service@aeg.de`
- **Subject**: "AW: Akkulaufzeit nicht mehr akzeptabel. Bitte um Ersatz Ticket-Nr.: 5a50166#3282150"
- **Body**: Contains keywords "rechnung", "umsatzsteuer", "bestellung" (likely in legal footer or shop page HTML) — but is a **service response** pointing to a web shop link for spare parts. No actual invoice attached.
- **Classification**: IGNORE (service response, not a financial document)
- **Pitfall**: Body-level keyword search for invoice terms is misleading here. Always check if the email is a service/customer support response.

## False Positive — ALH Dokumentenservice Notifications
- **Sender**: `Dokumentenservice@alte-leipziger.de`
- **Subjects**: "Erinnerung an ein neues Dokument zu Ihrem ALH-Vertrag", "Neue Dokumente zu Ihrem ALH-Vertrag"
- **Body**: Mentions "Leistungsabrechnungen" (in the context of "In Hallesche4u finden Sie Leistungsabrechnungen Ihrer Krankenversicherung") but is just a **notification** that new documents are available in the ALH insurance portal.
- **Classification**: IGNORE (insurance portal notification, not an invoice)
- **Pitfall**: The word "Abrechnungen" in the body is part of UI navigation instructions, not an actual billing document.

## Microsoft Teams Notifications
- **Sender**: `no-reply@teams.mail.microsoft`
- **Subject**: "[Name] hat eine Nachricht gesendet."
- **Body**: Contains HTML with inline images, Teams chat content
- **Classification**: IGNORE (chat notification)

## DKB Referral Marketing
- **Sender**: `kundeninformation@emails.dkb.de`
- **Subject**: "170 € Sommer-Aktion ☀️"
- **Body**: "Letzte Chance: Girokonto empfehlen & mehr verdienen" — referral campaign
- **Classification**: IGNORE (marketing, not a statement or invoice)