post https://api.raisely.com/v3/check-user
Check if a user is already registered to this campaign with a specific email address. This is useful for validation in a sign-up form to prompt an existing user to log in.
For custom components:
RaiselyComponents.api.all('check-user').post(data = {}, params = {}, headers = {}) => Promise<{result}>
See Restie Response Data for a more detailed overview of responses through the client wrapper