You can connect to your Office 365 that use the POP3 or IMAP4 Internet protocols. Connecting to your Office 365 email account using POP3 or IMAP4 only lets you send and receive email. You can’t connect to your contacts, tasks, or calendar when you connect to your account using POP3 or IMAP4.

Do the following to look up your settings.

• Sign in to your account using Outlook Web App.
• In Outlook Web App, click Settings (Gear icon) and click View all Outlook settings
• Then choose Mail from the left and choose Sync email.
• The POP3, IMAP4, and SMTP server name and other settings you may need to enter are listed.

Here is a quick reference to the Office 365 POP3 and IMAP4 settings but you are recommended to check the latest settings using the above method.