The choice of anonymizing the email sender address is optional.
By choosing anonymization, the sender's address is private and can be prevented from being completely used by a third party. It also completely prevents actions such as replying through another route.
Anonymization of "SafetyAnswer" email address is,

• The sender's real address is not known, so there is no information leakage. 
• Nobody except you  can send to the anonymous address you received. 
• You can manage the history of communication contents through "SafetyAnswer".

It provides excellent security measures that cannot be achieved with other tools.