I found that we can create alerts in Splunk and output the alert to specific email recipients.
Is there a way to send alerts or dashboard values to 3rd party apps other than email?
Yes, there is a way. When you edit the alert, scroll down to Trigger Actions and click the Add Actions button. There should be options to send to Slack and VictorOps and perhaps others, depending on which version of Splunk you have. There are apps available on splunkbase (apps.splunk.com) that offer more options.