In tenant contoso.com I have a guest user named firstname.lastname@example.org
When users of Contoso start a new chat to email@example.com they find two contacts:
- one firstname.lastname@example.org as an external user
- one email@example.com as a guest
If contoso users chat to firstname.lastname@example.org as an external users, then email@example.com receives the message in its tenant.
If contoso users chat to firstname.lastname@example.org as a guest, then email@example.com DOESN 'T receive the message in its tenant, but in a new chat in fabrika tenant: The user firstname.lastname@example.org must switch tenant to see the chat.
External user and guest user is not the same.. External user is someone outside your organization which is why sendings a chat to the external account ends up in this users org! A guest account is an account created in your own Azure AD! For teams this means you’ve invited this user to join your team inside your org! This also means that to participate and view chats , the user needs to switch over to your organization teams to view and collaborate! They should get a notification in the upper right corner of their teams client logged in to their org account, that there’s a chat in your org!