Once you have verified that your account has API access through Vertical Response Partner Support, then continue to Step 2.
Log in to Justuno and click "Promotions" and then select "Edit Integrations" next to the desired Promotion.
On the "App Integration" tab, locate and click on the Vertical Response - Classic "Connect" button to launch the configuration options.
Enter your Vertical Response - Classic Username and Password, then select a List (optional), and click “Save”. If you receive the following message, return to Step 1 and authorize your account for API access.
Your Justuno contacts will now be added to selected List in Vertical Response - Classic!