As of now, a unique email address is required for each Shogo account. A second email address will be required to open a different Shogo account. You may also consider using email subaddressing.

Subaddressing is an industry-defined way to support dynamic, disposable recipient (not sender) email addresses for mailboxes. An SMTP email address uses the basic syntax: <local-part>@<domain> . For example, user@gmail.com Plus addressing uses the syntax: <local-part>+<tag>@<domain>

So in other words, you may be able to use <user>+<variable>@domain.com  if your email service allows it. In that case, the emails would come to your same email address but Shogo would see that as a distinct/acceptable email.