Can user accounts share an email address?

Can multiple end users share an email address?

No, each user in the account must have a unique email address. An attempt to create a user with an email address that is already in use returns this error message:

Error saving user: Email: [email address] is already being used by another user

As a solution, add any information you need to one account with ticket data and delete possible duplicate user accounts. For more information, see these articles:

Zendesk Customer Agreement

Merging a user's duplicate account

Deleting users