Is there a replacement for email?

David is fed up with spam, phishing and viruses, and thinks email is no longer fit for purpose. What could he use to replace it?Like countless others, I use email daily, but it’s a love/hate relationship because of the dangers of viruses, trojans, phishing, spam etc. I think it is unreasonable to expect the average person to be able to tell a valid email from one that is dangerous.The latest problem is the incorrect identification of emails as spam. I check my spam folder two or three time