An email alias is a secondary email address that is connected to your primary email account. They can be used for a variety of purposes, such as creating a more professional or memorable email address, or for separating personal and work-related messages.
Whether you should create an email alias depends on your specific needs and goals. If you want to keep your personal and professional emails separate, then an alias can be useful. If you want to use a more memorable or professional-sounding email address, then an alias can also be beneficial.
However, it's important to note that an email alias is not a separate email account, it is just a different email address that is connected to your primary email account. All emails sent to an alias will be delivered to the primary account and it will have the same inbox, contact list and settings.