Hi,
There are two options how to set receiving of an email notfications, when sent email is delivered and read by recipient. These notifications are called
Delivery receipt and
Read receipt.
The first option is to apply them on one specific message, when writing a new email, by clicking on Options and then selecting
Request a Delivery Receipt and
Request a Read Receipt in Tracking section:
The second option is to apply them on all sent emails, by clicking on File > Options > Mail and selecting
Delivery receipt confirming the message was delivered to the recipient's email server and
Read receipt confirming the recipient viewed the message in
For all messages sent, request section: