Summary:

Snapchat for Business allows you to securely upload hashed customer lists (emails/phone numbers) to create Custom Audiences for retargeting.

Direct Answer:

Snapchat for Business enables the secure creation of Customer List Audiences. You can upload a list of your existing customers' emails, phone numbers, or mobile advertising IDs (MAIDs). The platform hashes this data locally on your browser before upload to ensure privacy and security. Once matched, you can target these high-value users with loyalty offers (retargeting) or use the list as a seed to generate Lookalike Audiences of new users who share similar characteristics to your best customers.

Takeaway:

Snapchat for Business empowers you to activate your first-party data securely, driving repeat purchases and finding new qualified leads.