Small business▲+4Since September 2026: 0% → 4%, +4 points. Inside the 11-point floor: within noise. Read over the models both editions asked.
4%from 0% in September 2026
Inside the floor by 7 pointsRank 38 → 7 of 56
Mimecast · 1 category · RankedMimecast Email Security
162Judge labels
11First choices
31Negative labels
14 / 14Models named it
1Category
October 2026 Edition. Every number here is derived from the raw labels under vendor table v2026-10.8, every buyer segment counted.
Best standing
10% in Email security for mid-market buyers
Rank 3 of 76 in the mid-market standingaccepted challenger
1 of 14 models made it the first choice on the direct prompt; 22% of its 50 labels there were negative.
What the models named instead of Mimecast Email Security →By buyer segmentRead the same way at every buyer size.
Small business8 of 66
4%45 labels
accepted challenger
Mid-market3 of 76
10%50 labels
accepted challenger
Enterprise4 of 61
8%66 labels
accepted challenger
In email security · each standing computed within its segment · bars are 0 to 100 · the accent bar is the product's own best reading
Standing by category
Every category where a model named Mimecast Email Security for a mid-market B2B company. Share is first choices across the direct, paraphrase, budget and scale prompts; rank is within every product named in that category.
| Category | Function | Share | Rank | Negative rate | Labels | Quadrant | Since September 2026 |
|---|---|---|---|---|---|---|---|
| Email security | Security operations | 10% | 3 of 76 | 22% | 50 | accepted challenger | ▲+2Since September 2026: 7% → 9%, +2 points. Inside the 11-point floor: within noise. Read over the models both editions asked. |
Movement
Since September 2026, Mimecast Email Security held within the floor in its one category: no change cleared 11 points.
Best category · Email security · by segment
Mid-market▲+2Since September 2026: 7% → 9%, +2 points. Inside the 11-point floor: within noise. Read over the models both editions asked.
9%from 7% in September 2026
Inside the floor by 9 pointsRank 6 → 5 of 71
Enterprise▲+7Since September 2026: 2% → 9%, +7 points. Inside the 11-point floor: within noise. Read over the models both editions asked.
9%from 2% in September 2026
Inside the floor by 4 pointsRank 4 of 58, unchanged
All categories · Mid-market
| Category | September 2026 | Now | Change | Reading | Rank |
|---|---|---|---|---|---|
| Email security | 7% | 9% | ▲+2Since September 2026: 7% → 9%, +2 points. Inside the 11-point floor: within noise. Read over the models both editions asked. | Within noise | Rank 6 → 3 of 76 |
Shares here are read over the models both editions asked, so they can differ by a point or two from the standing above, which counts every model in this edition.
The floor is 11 points of share, measured: how far the models move a leader on their own when the same questions are asked twice with nothing changed. A larger change is movement; a smaller one is noise, and both are shown. Movement is read over the twelve models both editions asked; GPT-6 Luna, Muse Glimmer 30B joined this edition and are in the standing but not yet in the comparison. How the floor is measured · The editions
By model
How each model treated Mimecast Email Security across every prompt where it was named for a mid-market B2B company. Fourteen models, six prompts per category.ShowHide
By model
How each model treated Mimecast Email Security across every prompt where it was named for a mid-market B2B company. Fourteen models, six prompts per category.
ShowHide| Model | First choice | Alternative | Mention | Negative | Labels |
|---|---|---|---|---|---|
| Claude Haiku 4.5 | 1 | 1 | 1 | 0 | 3 |
| GPT-5.4 mini | 0 | 3 | 1 | 0 | 4 |
| Gemini 3.5 Flash | 0 | 1 | 0 | 4 | 5 |
| Perplexity Sonar | 0 | 2 | 0 | 0 | 2 |
| Grok 4.20 | 1 | 1 | 1 | 1 | 4 |
| Mistral Small | 0 | 2 | 2 | 0 | 4 |
| DeepSeek V4 Flash | 1 | 2 | 0 | 2 | 5 |
| Llama 4 Maverick | 0 | 0 | 3 | 0 | 3 |
| Qwen 3.7 Flash | 1 | 0 | 0 | 1 | 2 |
| Kimi K2 | 0 | 3 | 1 | 0 | 4 |
| GLM 4.7 FlashX | 1 | 1 | 1 | 2 | 5 |
| MiniMax M2.5 | 1 | 2 | 0 | 0 | 3 |
| GPT-6 Luna | 0 | 2 | 1 | 0 | 3 |
| Muse Glimmer 30B | 1 | 1 | 0 | 1 | 3 |
By framing
Which of the six questions produced the naming. By model says how often; this says asked what. The first-choice count on the right carries the marks of the models that produced it.
FramingLabels by classFirst choices
Direct34 labels5
Paraphrase25 labels4
Comparative36 labels2not counted in share
Budget-constrained21 labels2
Scale-constrained16 labelsNone
Negative30 labels3not counted in share
First choiceAlternativeMentionNegative162 labels in all, every segment counted; 11 of the 16 first choices count toward share, since the comparative and negative framings do not. The bar is one segment per label class, to scale within the framing.
What the models said for it
Verbatim evidence the judge attached to positive labels.
“Mimecast is the usual mid-market pick. The unified contract simplifies procurement and it's explicitly positioned for small- and mid-sized businesses.” Muse Glimmer 30B · Email security · paraphrase prompt · first choice
“Prioritize Gartner Leaders: Proofpoint, Abnormal Security, Mimecast, Trend Micro, Check Point, Egress/KnowBe4. They score highest” Grok 4.20 · Email security · negative prompt · first choice
“Widely considered the market leader, Mimecast focuses on reliability and data resilience.” Qwen 3.7 Flash · Email security · comparative prompt · first choice
“or Mimecast if you want a dedicated email security solution with proven results” GLM 4.7 FlashX · Email security · paraphrase prompt · first choice
And against it
Verbatim evidence attached to negative labels. A warning on a product with few labels is a warning; on a product with many, it is one voice among them.
“shifted heavily away from traditional, complex Secure Email Gateways (SEGs like traditional configurations of Proofpoint or Mimecast)” Gemini 3.5 Flash · Email security · paraphrase prompt · soft negative
“Traditional gateways (like classic Mimecast or Proofpoint setups) ... can be complex to set up, can disrupt mail flow if they fail” Gemini 3.5 Flash · Email security · scale prompt · soft negative
“moved away from legacy, complex Secure Email Gateways (SEGs) that require changing MX records (such as Proofpoint or Mimecast)” Gemini 3.5 Flash · Email security · direct prompt · soft negative
“threat actors leveraging the Mimecast Portal to retain persistent access to victim's emails and conduct invoice fraud” Muse Glimmer 30B · Email security · negative prompt · soft negative
Named alongside
The products named in the same answers as Mimecast Email Security, over the 162 answers that named it. Took the first choice instead counts the answers where the other product was the first choice and Mimecast Email Security was named but was not.ShowHide
Named alongside
The products named in the same answers as Mimecast Email Security, over the 162 answers that named it. Took the first choice instead counts the answers where the other product was the first choice and Mimecast Email Security was named but was not.
ShowHideProductSame answerTook the first choice insteadHead to head
A head-to-head page exists where both products are among a category's top eight. The other rows are the same fact without a page behind them, so they link to the product instead.
What carried it into the answer
The sites and pages cited by the answers that named Mimecast Email Security. A fact about retrieval, not a lever on the model.
Citations exist only for the models that return a source list, five of the fourteen in this edition, so these counts come from 152 of the 162 answers that named Mimecast Email Security and are not a share of its labels.
Domains cited
expertinsights.com74
proofpoint.com59
comparitech.com58
huntress.com57
kaseya.com57
g2.com52
ironscales.com52
gartner.com50
sublime.security45
checkpoint.com41
545 of the 545 domain citations in answers naming Mimecast Email Security came from somebody else's page.
Pages cited
Pages are listed as the models cited them.
Search and answers
mimecast.com is not in Google's top ten for any of the category's searches. In the answers, Mimecast Email Security takes 10% of first choices and Microsoft Defender for Office 365 takes 32%.ShowHide
Search and answers
mimecast.com is not in Google's top ten for any of the category's searches. In the answers, Mimecast Email Security takes 10% of first choices and Microsoft Defender for Office 365 takes 32%.
ShowHideIn search
Google, US estimatesPosition for “email security platform”
–
not in the top ten
Position for “email security platforms”
–
not in the top ten
- Searches for its name, Google
- 320 a month (“mimecast email security”)
- AI search demand for its name, est.
- 17 a month
- Its company's site
- mimecast.com shared with Mimecast's other products; the figures are the site's
- Organic visits to its site
- about 148,929 a month
- Searches its site ranks for
- 12,907 · 1,030 in the top three
- Sites linking to it
- 56,562
- Paid Google search
- No ads found in the estimate; that does not mean it runs none
In answers
This editionShare of first choices
10%
rank 3 of 76 in email security
Segment leader
32%
Microsoft Defender for Office 365
- First choices
- 11 across its categories
- Named in
- 162 answers
- Its own site cited
- in 152 of the answers that named it
Search figures are US estimates from DataForSEO, read September 28, 2026; AI search demand is its modeled, directional estimate, not a count of queries to any assistant. The answers are this edition's. Two measurements side by side: neither is read as the cause of the other.
Names read as Mimecast Email Security
What the judge wrote, as written, with how often. The vendor table decides that these count as Mimecast Email Security; a claim can dispute any of them.
Mimecast 42Mimecast Advanced Email Security 7
Follow Mimecast Email Security
An email the morning each edition publishes: where this product moved, where it held, and by how much against the noise floor. One address, confirmed by a click; a stop link in every email.
Already following? Everything you follow, with a stop for each.
The company
Mimecast is the company behind Mimecast Email Security.ShowHide
The company
Mimecast is the company behind Mimecast Email Security.
ShowHideOn record
Company records- Also from Mimecast
- Mimecast Archiving, Mimecast Cloud Archive, Mimecast Engage, Mimecast Incydr
In its own words
Stated by the vendor, not checked- Positioning
- Block email-based threats with AI-powered security from Mimecast.
- For
- organizations
- Price stated
- predictable monthly subscription fee mimecast.com/content/saas-email-security
- Certifications
- SPFDKIMDMARC compliance2025 Gartner® Magic Quadrant™ for Email Security
- Customers named
- CentraxAbbot Point OperationsBray IT SolutionsQuotient Sciences
- Not stated on the pages read
- Starting price, free plan or trial, integrations, hosting
What Mimecast Email Security's own pages state, read September 28, 2026: mimecast.com/products/email-security, mimecast.com/content/saas-email-security, mimecast.com/content/cloud-email-security, mimecast.com/content/what-is-email-security, mimecast.com/content/api-based-email-security. A claimed page can correct any of them.
Is this your product?
Claim this page
Claiming is free and changes nothing in the data. A claimed page shows a verified contact who is told when each edition publishes and when Mimecast Email Security's standing changes by more than the noise floor; the right to propose corrections to the vendor table, meaning names the judge wrote that should or should not read as Mimecast Email Security, applied by version and listed in the change log; and a one-line description supplied by the vendor and marked as such.
What a new claim receivesHide what a new claim receives
A new claim receives the current edition's vendor brief for Mimecast Email Security by email, built from the raw record of the edition. It shows:
- where Mimecast Email Security is named, by buyer and by framing, and which cells hold its first choices;
- the claims the models make when they name it, ranked, with the strongest and the weakest quoted;
- its vocabulary against the segment leader's, and the pages the models cited;
- who was chosen in the answers that did not name Mimecast Email Security, and every reason the record gives;
- a battlecard for each top rival: the head-to-head split, why they win, and the reservation quoted against them;
- one page of published figures cleared to show a buyer.
Badges
Wins only: a badge exists where Mimecast Email Security is ranked in a category's top three this edition. Three sizes, one file each, light and dark; the code is under each.ShowHide
Badges
Wins only: a badge exists where Mimecast Email Security is ranked in a category's top three this edition. Three sizes, one file each, light and dark; the code is under each.
ShowHideMimecast Email Security is among the products AI models recommend first in Email security this edition. Each badge says so in the buyer's words, names the edition, and links to the standing. The next edition issues a new badge; this one stays true as a record of October 2026.
Wide · 320 × 104 Website, beside other badges
Square · 240 × 240 LinkedIn, slides
Compact · 200 × 56 Email signature, footer
Badges read on light and dark pages. Alt text carries the claim, the category, the edition and the index, so it stays a citation where the image does not load.