hello there,
this is not support for splunk, this is an open community that helps one another. if you need to contact support, make sure you are the registered contact on your splunk account or leverage that person in your organization.
as for your question, the answer is yes.
read here:
http://docs.splunk.com/Documentation/Splunk/6.6.0/Alert/Emailnotification#Configure_email_notificati...
see this answer as well:
https://answers.splunk.com/answers/399201/how-to-configure-my-email-settings-to-get-email-al.html
hope it helps