I always have the simplest things lol. I'm, not receiving emails that I am expecting for Sandbox. The email is triggered from a Event based Workflow VIA a button click that would send to a vendor but I even added my email in the Vendor Email position to be safe. Nothing.

@Jeff Jacobs For sandbox, NetSuite turns off the emails by default I believe. So you have to temporarily enable the email under email preferences in Sandbox. (Setup > Company > Email Preferences > Sandbox and Release Preview tab > Sandbox Options. Add your own email in the first radio or you can also choose the 2nd radio (SEND EMAIL TO LOGGED IN USER)

@neerajrtiwari You are a legend, I've always had emails just go to me from sandbox in other environments so this is very informative.

You can also navigate to your employee record and look under communications irrespective of the settings.