---
agentTools:
  projectIndex: https://docs.mollie.com/llms.txt
---

# Clarified Punycode encoding requirement for email fields

Added a note to all email address fields across the API clarifying that domains containing non-ASCII characters must be Punycode-encoded per RFC 3492. Affected APIs: Customers, Client Links, Profiles, Organizations, Orders, Payments, Onboarding, and Sales Invoices.