Do I need to add my mailing address?

It is your responsibility to comply with your laws. Many countries have anti-spam laws (CAN-SPAM Act, CASL) that state your email must include your valid physical postal address to tell recipients where you’re located. This can be your current street address, a post office box you've registered with the national Postal Service, or a private mailbox you've registered with a commercial mail receiving agency established under Postal Service regulations.

The more information you provide, your profile will look more professional and legitimate.