Top 20 email security software by AI search visibility (2026)
Security platforms used to stop phishing, malware, business email compromise, impersonation, and account takeover across business email environments. Ranked by a composite score: 70% visibility (% of AI answers naming the brand) + 30% citation rate (% citing the brand's domain). Full methodology →
Refreshed Jun 08, 2026At a glance
What we observed in this categoryauto-generated
Proofpoint leads the email security software category with a composite score of 33.8, visibility of 37.5%, and citation of 25% — figures that dwarf the category averages of 4.4% visibility and 13.1% citation. The gap between Proofpoint and the second-ranked brand is significant: no other brand achieves both meaningful visibility and citation simultaneously. This dual presence suggests Proofpoint is being surfaced both as a named recommendation and as a referenced source, a combination that compounds AI Mode influence beyond what any single metric captures.
The most striking divergence in the data is between Check Point Harmony Email and Abnormal Security. Check Point holds 0.0% visibility yet an 87.5% citation rate — the highest in the category — indicating Google AI Mode trusts its content as a source without surfacing it as a brand answer. Abnormal Security is the mirror image: 25.0% visibility with 0.0% citations, meaning it is named in AI responses but its own domain is not being pulled as a reference. IRONSCALES similarly holds 50.0% citation with zero visibility, reinforcing a pattern where citation and brand mention operate as distinct signals.
Google AI Mode is the top engine for every brand in the dataset, confirming this category's AI visibility is entirely concentrated within that single engine. The top cited sources list features checkpoint.com and trustifi.com ahead of gartner.com, which is notable given Gartner's typical authority in software categories. The presence of sublime.security, abnormal.ai, and revnet.ca alongside brand domains suggests Google AI Mode is drawing on a mix of vendor content and third-party review or research material rather than anchoring exclusively on established analyst sources.
Movers & shakers since last refresh
Biggest visibility risers
-
Proofpoint 0% → 38% · rank #0 → #1+38pp
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Mimecast 0% → 25% · rank #0 → #3+25pp
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Abnormal Security 0% → 25% · rank #0 → #4+25pp
The ranking
| # | Brand | Visibility | Citation | Top engine |
|---|---|---|---|---|
| 1 |
proofpoint.com
|
38% | 25% | Google AI Mode |
Proofpoint's 37.5% visibility and 25.0% citation both exceed the category averages of 4.4% and 13.1% respectively, making it the only brand with strength across both AI signals. |
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| 2 |
checkpoint.com
|
0% | 88% | Google AI Mode |
Check Point holds the highest citation rate in the category at 87.5% but 0.0% visibility, meaning AI Mode references its content extensively without surfacing it as a recommended brand. |
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| 3 |
mimecast.com
|
25% | 25% | Google AI Mode |
Mimecast is one of only two brands with matched visibility and citation scores (25.0% each), and its domain appears directly in the top cited sources list, reinforcing consistent AI presence. |
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| 4 |
abnormalsecurity.com
|
25% | 0% | Google AI Mode |
Abnormal Security achieves 25.0% visibility — well above the 4.4% average — but records 0.0% citations, suggesting AI names it as a solution while never pulling its domain as a source. |
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| 5 |
ironscales.com
|
0% | 50% | Google AI Mode |
IRONSCALES mirrors Check Point's pattern with 50.0% citation and 0.0% visibility, ranking fifth overall despite never being surfaced as a named brand recommendation in AI responses. |
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| 6 |
barracuda.com
|
0% | 25% | Google AI Mode |
| 7 |
trustifi.com
|
0% | 25% | Google AI Mode |
| 8 |
cisco.com
|
0% | 12% | Google AI Mode |
| 9 |
fortra.com
|
0% | 12% | Google AI Mode |
| 10 |
microsoft.com
|
0% | 0% | Google AI Mode |
| 11 |
trendmicro.com
|
0% | 0% | Google AI Mode |
| 12 |
sophos.com
|
0% | 0% | Google AI Mode |
| 13 |
egress.com
|
0% | 0% | Google AI Mode |
| 14 |
darktrace.com
|
0% | 0% | Google AI Mode |
| 15 |
spamtitan.com
|
0% | 0% | Google AI Mode |
| 16 |
mailprotector.com
|
0% | 0% | Google AI Mode |
| 17 |
vadesecure.com
|
0% | 0% | Google AI Mode |
| 18 |
material.security
|
0% | 0% | Google AI Mode |
| 19 |
tessian.com
|
0% | 0% | Google AI Mode |
| 20 |
n-able.com
|
0% | 0% | Google AI Mode |
Sources AI engines trust in this category
Across the 8 buyer-intent queries we ran on email security software, these are the domains Google AI Mode cited most often. If you're not on this list — or if your competitors are — that's a concrete PR / linkbuilding target.
How to read this ranking
Four things worth knowing before you act on the numbers above. These are the same definitions across every industry page — for category-specific observations, see the What we observed section above (where available) and the per-brand insights inline in the ranking.
Visibility = being named
A brand's visibility % is the share of AI answers that mention it by name in the response prose. This is who AI engines actively recommend to the buyer.
Citation rate = being trusted
Citation rate is the share of AI answers that include the brand's domain as a clickable source link. This is what the AI treats as authoritative evidence — different from being named.
Top engine differs by brand
The "top engine" column shows which AI surface each brand performs best on. Big gaps between a brand's score across engines usually points to specific content or schema gaps.
Rankings move month to month
AI engines re-crawl and re-rank on shorter cycles than classical search. We re-audit every brand on this list at least every 30 days and refresh this page automatically.
Get your own email security software brand audited
The brands above were curated from public market-leader lists. Want the same measurement against your own brand — including the queries you appear on, which competitors get named instead, and a prioritised fix list? Run a free preview.
Frequently asked about email security software AI visibility
Who leads AI visibility in email security software?
Proofpoint leads with a composite score of 33.8, visibility of 37.5%, and citation of 25% — all well above the category averages of 4.4% visibility and 13.1% citation. No other brand simultaneously achieves meaningful scores on both metrics.
Which email security brand is cited most by Google AI Mode without being named as a recommendation?
Check Point Harmony Email holds an 87.5% citation rate — the highest in the category — yet records 0.0% visibility, meaning its content is referenced as a source but the brand itself is not surfaced as a recommended solution.
What sources does Google AI Mode anchor on most for email security research?
The top cited sources in this category include checkpoint.com, trustifi.com, and gartner.com, alongside vendor and niche domains like sublime.security, abnormal.ai, and revnet.ca, indicating a mix of vendor content and third-party material.
Is there a gap between brands that are named versus brands that are trusted as sources in this category?
Yes — Abnormal Security has 25.0% visibility with 0.0% citations, while IRONSCALES and Check Point have high citation rates (50.0% and 87.5%) with zero visibility, showing that brand mention and source citation operate as entirely separate signals in this category.
Which engine drives AI visibility for email security software brands?
Google AI Mode is the top-performing engine for every brand in the dataset; no other engine surfaces as a significant driver of visibility or citation in this category.
How does Microsoft Defender for Office 365 perform in AI visibility for email security?
Microsoft Defender for Office 365 records 0.0% visibility, 0.0% citation, and a composite score of 0.0, placing it at rank 10 despite being one of the most widely deployed email security products in the market.