Spotify Ads Manager can hash customer lists using the SHA256 algorithm. We’ll only include matched users in the custom audience. 

Uploading Pre-Hashed Lists

If your list is pre-hashed before uploading, prepare your customer list by following these requirements and specifications:

• E-mail addresses, device IDs, and phone numbers should be normalized and formatted as lowercase.

• Mixing e-mail address and device ID in the same column is not supported. Each identifier should be mapped to the correct header row describing the hashed ID: 

  • EMAIL_ID_SHA256

  • DEVICE_ID_SHA256

  • PHONE_NUMBER_SHA256

• List must be hashed using the SHA256 algorithm.

Note: Phone numbers are only supported for data matching in Brazil, Mexico, and India

Normalizing e-mail addresses: 

• Remove all leading and trailing spaces from the list of e-mail addresses. 

• Lowercase all characters.

• For gmail.com addresses only:

  • If there is a period (.) in the address, remove it.

  • If there is a plus sign (+) with an additional string after it, before the @gmail.com, remove the plus sign (+) and all subsequent characters.

Examples of normalized e-mail addresses: