Sync contacts between Microsoft 365 Shared Mailbox and countless other apps

A shared mailbox is a type of user mailbox that does not have its own username and password. Therefore, users cannot log in to them directly. To access a shared mailbox, users must first be granted the "Send as" permission or the "Full access" permission. Then, users can log in to their own mailboxes and then access the shared mailbox by adding it to their Outlook profile. In Exchange 2003 and earlier, shared mailboxes were simply regular mailboxes for which an administrator could grant proxy access. Since Exchange 2007, shared mailboxes are a separate recipient type: RecipientType: UserMailbox RecipientTypeDetails: SharedMailbox Translated with www.DeepL.com/Translator (free version)