If the email client supports ActiveSync (type of account is usually listed as Exchange), then this is the preferred method for configuring the email client. If ActiveSync is not supported, then ITS recommends that you use IMAP to configure the client.
Microsoft has released instructions on how to connect Office 365 (the service behind SUmail) using different email clients for Windows and the Mac. ITS recommends that you use IMAP to configure your email client if Exchange ActiveSync is not available:and that you do not use POP.
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