Types
TenantMembershipPolicy
Controls how tenants are assigned when a message from an associated channel is received.
enum
TenantMembershipPolicyValues
DO_NOT_ADD
Do not add the customer to the tenant or assign the tenant to the thread
IF_DOMAIN_NOT_AVAILABLE
Add the customer to the tenant and assign the tenant to the thread if the user has no email domain available
ALWAYS_ADD
Always add the customer to the tenant and assign the tenant to the thread

