IMAP and POP are email protocols used by email applications to access messages from a mail server. However, the available connection methods depend on your Microsoft 365 account configuration.

IMAP allows an email client to synchronize messages with the mail server, helping you access your email across multiple devices.

POP downloads email messages to an email client. Depending on your configuration, messages may not stay synchronized across all your devices.

If you want to access and manage your email across multiple devices, IMAP is generally the more suitable option when it is supported by your email service.

Before configuring your account, confirm which protocols are supported and enabled for your Microsoft 365 mailbox.

If you need assistance setting up your email client, contact your email service provider or support team to confirm the correct server settings for your account.