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Proofpoint remains a leader for its 99.999% accuracy and specialized protection for high-value targets, though it is often noted for its administrative complexity.

Microsoft Defender for Office 365 and Google Workspace provide robust, native protection that many organizations find sufficient as a baseline before adding a dedicated third-party layer. A Success Story: Eradicating the "Deluge" best hosted spam filter

“Proofpoint is probably the best on security but is very bloated, cumbersome, and takes a lot more time to administer.” Reddit · r/sysadmin · 1 year ago Proofpoint remains a leader for its 99

Abnormal AI is praised for its behavioral modeling that focuses on what "normal" looks like to catch sophisticated social engineering that traditional list-based filters might miss. best hosted spam filter