In order to help ensure proper delivery of emails to your customers, they can add your organization to their Safe Sender or Approved list also referred to as a Whitelist.
Curious how to whitelist? Or tell your customers how to whitelist? Here is a great reference page to share with them: How to Whitelist Email.
Jackrabbit Email Server IP Addresses
All emails generated and sent from Jackrabbit are processed through our servers. For your reference our domain is jackrabbittech.com and our email servers IP addresses are: