New Layout
1.Go to Settings Tab> CHANNEL MANAGER>AIRBNB XML
2.Set "Guest Messaging" = API
3. Allow BookingAutomation to send messages. To check this, log into your Airbnb account and go to ACCOUNT -> PRIVACY AND SHARING. If you see 'Access and respond your messages' in the list of permissions, BookingAutomation can send messages. If not you need to upgrade the connection. This is how you do it:
If you have multiple Airbnb accounts, log completely out of Airbnb.
Log into BookingAutomation. If you have connected more than one Airbnb account in BookingAutomation make sure you are logged into the BookingAutomation account/subaccount which is connected to the Airbnb account you are logged in. The sub account should 'own' the property, not just have access to the property.
Go to Settings > Channel Manager > AirBnB.com XML > Specific Content
Scroll down and click the 'Airbnb additional functions' link.
Then click the button. This will take you to Airbnb where you should log into the Airbnb account connected to your BookingAutomation account.
Accept the new permissions and you will be returned to BookingAutomation.
Note: If you want to use Auto Actions you will need to add a plain text version to your Auto Actions (Airbnb does not support HTML).
Important: Make sure that you have set up your outgoing email correctly inorder to facilitate the communication.
Please see help : http://help.bookingautomation.com/en/articles/3072703-setting-up-your-own-outgoing-email-gmail OR step by step guide : https://www.bookingautomation.com/wiki/index.php/Outgoing_Email
4. Go to " Messages" tab to see the Airbnb Messages
Old Layout
Go to Dashboard and set up API Messages
Then Follow Step 2 and 3 given above under "New Layout"