On the email you received, click on Contact blue button which shall take you directly inside your account on oDASH. You will be able to view all your requests (exhibitors / speakers / sponsors / visitors) and message them personally from there.
You can alternatively choose to directly login to your oDASH account and can contact the leads by the below procedure:
Step 1: Click on 'Manage' on your preferred event
Step 2: Click On Exhibitor Leads mentioned under 'Leads'
Step 3: A list of all exhibitors who have shown interest will be displayed, you can proceed to click on Contact button to connect with the exhibitors
Note: We suggest you do this via your laptop and not a mobile device, for best results.