During this time it is advisable to use Outlook on the web whilst the application completes its data synchronisation. You may encounter data throttling errors, preventing the initial sending and receiving of email for periods of time.Your email application must support IMAP through secure connections.IMAP4 is preferred over POP3 because it supports larger mailboxes with multiple folders and allows mail to be accessed on multiple devices and applications.If your email application is not compatible with multi-factor authentication (MFA), you will need to create an app password to use it with Nexus 365. Your username will be your Oxford username in the format password will be your Single Sign-On (SSO) password See IT Services entitlements based on your card.MFA authentication methods pros and cons.MFA: managing MFA across multiple devices.MFA: Signing in using different authentication methods.MFA: Setting up text message verification on a personal device.MFA: Setting up multi-factor authentication on a new phone.MFA: Managing your multi-factor authentication set-up.