2. Go to Property > Messaging Preferences > Security Setting.
Email Setup:
On the
security settings page, go to the section titled "Email", add your UpsellGuru email sender address and click on the button "Add email address". You will find your UpsellGuru email sender in the Platform under Interfaces.
Link Setup:
Please include the slash ( / ) at the end of .co/
Booking.com Setup Screen for Email and Link setup: