Genesys Cloud provides comprehensive list management capabilities for uploading, appending, and downloading contact lists and do-not-call lists. Users can upload contact data in comma-separated value (.csv) format and manage lists through separate interface tabs including Contact lists view and Do not contact lists view. Key features include assigning contact lists to campaigns, limiting contact attempt frequency on specific records or phone numbers, applying filters to restrict dialing to matching contacts only, implementing automatic time zone mapping for compliant dialing times, and using the Contact list editor to manage individual contacts. Downloaded list data includes system-generated columns indicating last contact attempt timing and call attempt outcomes. Each list entry stores phone number collections and related contact details, enabling organizations to maintain large contact databases while enforcing compliance requirements and operational constraints.