Generally, when an email is sent successfully out of the ClickClaims CMS application, but the recipient does not receive the email, the cause is due to the recipient's email blocking the emails.  This is done by their email provider either treating the email(s) as spam and sending them to the "Junk" folder or blocking the email altogether. 

The user needs to ensure that the following IP Addresses, used by the CMS application, are whitelisted:

11.22.333.101

11.23.444.555

11.23.445.111

11.43.446.211

The user will also need to ensure that the "From" email entered in the System Email's "Attributes" tab is whitelisted as well.  Please see the System Email user guide for details on how to determine this email address.