This document explains what happens when you invite unregistered or an already registered user.
Unregistered user behavior
After you create an invitation, an unregistered user receives an email with a link to the registration form.
When the user opens the link, the registration form is pre-filled with the email address. It also includes the name if you provided it in the invitation. The email field cannot be edited.
After the user completes the required fields and confirms registration, the system creates a user profile, an account, and one or more mailboxes. The user then receives access rights based on the permissions you configured when sending the invitation.
Registered User Behavior
After you create an invitation, a registered user receives an email with a link to the Invitations tab in their profile.
In the Invitations tab, the user can review all invitations and accept or decline them:
To accept an invitation, click Accept. The status changes to Accepted.
To decline an invitation, click Decline. The status changes to Rejected.
After the user accepts or declines your invitation, you receive a notification with their decision.