Email messages are not scanned client-side by Outlook 2016 for Mac to determine whether they are junk mail. Instead, it only relies on the mail server to perform all junk mail filtering. Outlook 2016 for Mac doesn’t provide any client-side junk mail protection for any kind of an account (Exchange, POP, or IMAP). Client-side junk filtering occurs on the client (such as Outlook and Outlook for Mac) when email messages are downloaded from the server to the client. Server-side junk filtering occurs on the mail server (such as Exchange) as soon as email messages arrive in the mailbox. There are two kinds of junk mail filtering (sever-side and client-side). This article discusses how Outlook 2016 for Mac handles Junk Email Protection. Outlook for Microsoft 365 for Mac Office for business More.
