As with most software systems, Everproof currently uses the email address as the unique ID for a user. This means two people cannot share an identical email address for their account.
We do, however, allow email aliases which may be a good workaround if you have a couple or family sharing an email. An email alias refers to a different email that still delivers to the same inbox.
For example, Gmail will deliver emails to the following addresses to the same inbox:
This example is specific to Gmail, however, your provider may allow for something similar.