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Index › IT › Products › Microsoft Defender for Office 365 › Alternatives · November 2026 Edition
One category · what the models named instead

Alternatives to Microsoft Defender for Office 365, as AI models named them

In the November 2026 Edition, 95 of the 252 answers collected in the one category where Microsoft Defender for Office 365 holds a standing named it neither as a first choice nor as an alternative. These are the products those answers put first, category by category and buyer by buyer. The output is the models' output.

Named instead, most often
Proofpoint Email Protection9
Microsoft 3657
Abnormal AI5
Mimecast Email Security4
Trustifi3
Check Point Harmony Email & Collaboration2
First choices in the 95 answers that did not name Microsoft Defender for Office 365, every category and segment above added together; a product can be counted in several. Each category below keeps its own denominator.

Email security

Security operations. Six framings, fourteen models, one answer each per buyer segment; an answer counts here when Microsoft Defender for Office 365 is not its first choice or an alternative in it.
Small businessMicrosoft Defender for Office 365 is #1 of 10 here at 43% of first choices, 63 labels.

Twenty-eight of the eighty-four answers did not name Microsoft Defender for Office 365; it was the first choice in thirty-five. The first choices in those twenty-eight answers, seven products in all:

Microsoft 3654 of 28
IRONSCALES1 of 28Head to head →
Microsoft 365 Business Premium with Defender for Office 365 Plan 11 of 28
Paubox1 of 28
Proofpoint Email Protection1 of 28Head to head →
Sophos Email1 of 28
Trustifi1 of 28
The full small business standing →
Mid-marketMicrosoft Defender for Office 365 is #1 of 9 here at 45% of first choices, 63 labels.

Thirty-three of the eighty-four answers did not name Microsoft Defender for Office 365; it was the first choice in thirty. The first choices in those thirty-three answers, seven products in all:

Microsoft 3652 of 33
Mimecast Email Security2 of 33Head to head →
Trustifi2 of 33
Check Point Harmony Email & Collaboration1 of 33Head to head →
IRONSCALES1 of 33Head to head →
Libraesva1 of 33
Proofpoint Email Protection1 of 33Head to head →
The full mid-market standing →
EnterpriseMicrosoft Defender for Office 365 is #2 of 10 here at 24% of first choices, 63 labels.

Thirty-four of the eighty-four answers did not name Microsoft Defender for Office 365; it was the first choice in nineteen. The first choices in those thirty-four answers, seven products in all:

Proofpoint Email Protection7 of 34Head to head →
Abnormal AI5 of 34Head to head →
Mimecast Email Security2 of 34Head to head →
Barracuda Email Protection1 of 34Head to head →
Check Point Harmony Email & Collaboration1 of 34Head to head →
Defender1 of 34
Microsoft 3651 of 34
The full enterprise standing →

How to read this

A category is asked six ways of each of fourteen models on behalf of each buyer segment, so a segment is eighty-four answers. An answer belongs on this page when the judge labeled Microsoft Defender for Office 365 neither its first choice nor an alternative in it; the products listed are the first choices those answers made, counted once per answer. An answer that named nothing first, or named Microsoft Defender for Office 365 only in passing, is in the denominator and adds to no product. The counts are not the category standing, which is on the category page with its share and rank; they are the same record read from Microsoft Defender for Office 365's side.

The output is the models' output; nothing here is a recommendation by the index, and a product named instead of Microsoft Defender for Office 365 was named by a model, not endorsed by anyone.

Microsoft Defender for Office 365's pageAll products