InfoPath Dev

It is on-premises.I have few data connections as well.Is it possible to sandbox data connections as well especially email data connections?I have a buttons event handler code which is used to submit data.

Hi, Can we make info-path forms no longer admin approved in SharePoint 2013/2016?Currently i am using admin approved form template with code-behind.Is there any alternative approach to publish it to SharePoint with out using admin approved form template? Thank You