# Customers

- [Customers](/customers/customers.md)
- [Manage a customer](/customers/customers/manage-a-customer.md)
- [Quick actions](/customers/customers/manage-a-customer/quick-actions.md)
- [Import existing invoices](/customers/customers/manage-a-customer/import-existing-invoices.md)
- [Import existing customers](/customers/customers/import-existing-customers.md)
- [Kundenzugriffe](/customers/customers/kundenzugriffe.md)
- [Support tickets](/customers/customers/support-tickets.md)
- [Customer groups](/customers/customer-groups.md)
- [DSGVO / GDPR](/customers/dsgvo-gdpr.md)