For security purposes, Booking.com has created a “Guest Communication Allow List” for all vendors or systems which communicates with your guests. You are required to complete this setup step to be able to communicate with guests. 

1. Log into your Booking.com Extranet with the Admin log-in.

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 Integrations.

Link Setup:

In the "Your approved link" session, add the link: https://www.upgrademyroom.co/

Please include the slash ( / ) at the end of .co/ 

Booking.com Setup Screen for Email and Link setup: