Outlook supports IMAP, not POP3. <a href="https:&#x2F;&#x2F;support.office.com&#x2F;en-us&#x2F;article&#x2F;Set-up-email-on-iPhone-iPad-or-iPod-Touch-b2de2161-cc1d-49ef-9ef9-81acd1c8e234#BKMK_IMAPorPOP" rel="nofollow">https:&#x2F;&#x2F;support.office.com&#x2F;en-us&#x2F;article&#x2F;Set-up-email-on-iPh...</a>