# Check if user exists

Check if a user already exists by email. Wise uses email address as unique identifier for users. If email has already been used by a user, it cannot be reused to create a new user.

Note that this uses a client-credentials-token and not a user access_token for authentication.

Endpoint: POST /v1/users/exists
Security: ClientCredentialsToken

## Request fields (application/json):

  - `email` (string, required)
    User's email address.
    Example: "test@wise.com"

## Response 200 fields (application/json):

  - `exists` (boolean)
    Whether a user with this email already exists.