title: Microsoft Graph API vs. IMAP/POP3 - which is better for reading mails?
body: <p>I want to read mails of users of a specific domain (tenant) using Outlook API. However, I don't have privileges to register new app in Azure portal, for that domain, and so am not able to use Graph API. We cannot use Outlook API without an OAuth app. In this case, using IMAP/POP3 is my only choice? How secure is to use IMAP/POP3 to read mails when compared to Azure AD Graph API? Please advise.</p>