How do I add a User to multiple accounts?

An email address can only be used with one Account. The steps below outline how to get a user added to multiple Accounts if you have received the " User Already Exists" error message.


This message may also be shown in the  Add New User window in-app.

You can determine the appropriate next steps for you by answering the following questions:

A: Does the User need access to both the old and new Accounts? 

If the answer is no, you can send an email to [email protected] with this request. Make sure you include the email address you’re dealing with, the Account you’d like to delete the User from, and the Account you’d like to add the User to. We will not be able to move forward with these requests unless we have consent from both parties (User whose email address we are updating + Admin in new Account)

B: Do you want to give the User access to an existing account while still having access to the other account?

If you are using a Google-based email solution like GMail, then this can be done using the “+” operation. Your email service will read the "+" and ignore anything after it, but Databox will register it as a unique email address. 

For example, the email address "[email protected]" is registered as a different address than "[email protected]" by the Databox system. Therefore, "[email protected]" can be successfully added to Databox Account 2 while "[email protected]" is already a User in Databox Account 1. Any emails sent to [email protected] will go to the inbox of [email protected]

 Signup or Invite a New User using "+" operation


 Check User's original email inbox

(In this case "[email protected]")

Once the User has been added to the Databox Account, they will receive an email with their login credentials.

After the User accepts the invitation they will be successfully added to the Databox Account.

NOTE: You can replace the text after the "+" operator with anything you want. For example: "[email protected]" or "[email protected]

If you are using a Microsoft 365 mail and have admin permissions, then follow these steps in order to create aliase(s):

1. In the Admin Center go to the Active Users page, or choose Users > Active users.

2. On the Active Users page select the name of the person you want to edit.

3. On the right, in the Username / Email Aliases row, choose Edit.

If you get the error message "A parameter cannot be found that matches parameter name 'EmailAddresses," it means that it's taking a bit longer to finish setting up your tenant, or your custom domain if you recently added one. The setup process can take up to 4 hours to complete. Wait a while so the set up process has time to finish and then try again. If the problem persists, contact Microsoft Support and they will do a full sync for you.

4. On the Edit email addresses page, in the text box under Alias, type the first part of the new email alias

If you added your own domain to Office 365, you can choose the domain for the new email alias by using the drop-down list.

5. Then choose Add.

You can create up to 400 aliases for a user. No additional fees or licenses are required.

Note: This can be done by Office 365 global admins who have Business subscriptions.

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