Which statement is true about e$-$mail communication?

Question $19$ options:

Employees and managers are increasingly using phone conversations instead of e$-$mail.

E$-$mail sent from corporate accounts is the property of the sender$.$

In$-$depth tasks are usually communicated via e$-$mail.

Using work e$-$mail accounts to send personal information may be against company policy.

Most companies don't have a need for e$-$mail policies