The possible value of business message provider types.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v23/enums/business_message_provider.proto)

| Enums ||
|---|---|
| ## `FACEBOOK_MESSENGER` | Facebook Messenger message provider |
| ## `UNKNOWN` | Used for return value only. Represents value unknown in this version. |
| ## `UNSPECIFIED` | Not specified. |
| ## `WHATSAPP` | WhatsApp message provider |
| ## `ZALO` | Zalo message provider |