Below are all items that would possibly need to be whitelisted on your end. The most important are the URL and the email address, but some of the other items have been blocked by other organizations, so it might make sense to send them all. 

 

The following are the IP addresses for our servers:

https://www.richardsonaccelerate.com

169.46.41.176/28

169.46.42.16/28

169.46.42.96/27

169.45.94.16/28

169.45.86.192/29

169.44.151.16/28

169.44.151.96/27

 

 

 

The following IP is for the emails that we send out:

[email protected]

192.237.159.75

 

 

 

 

The following domains may need to be whitelisted:

amazonaws.com

benchprep.com

cloudfront.net

google-analytics.com

youtu.be

youtube.com

cdn.pendo.io