In Texas I didn’t answer the phone at all. Everything went to voice mail. I only answered the door when I knew in advance who it was. My apartment sent advance notice when they were doing work or maintenance. As for emails, I must know who or it gets deleted. Now in Minnesota in mum’s house she runs to answer the phone even when it says on the tv, spam risk. It’s a pavlovian response. Here tho nobody pops in without advance warning. Mum never got much email and now no longer has a tablet.