Email security · RankedMimecast Email Security
Mimecast Email Security is an email security product from Mimecast that blocks email-based threats for organizations · mimecast.com ↗
Read the same way at every company size.
The standing depends on who is buying. Every model is asked the same questions for each company size.
Microsoft Defender for Office 365 is first at 43%.
Microsoft Defender for Office 365 is first at 45%. 3 of 14 models made it the first choice when asked directly.
Proofpoint Email Protection is first at 41%.
Why models recommend it
“Mimecast if you want a more dedicated email-security layer with broader controls and stronger operational features.”GPT-5.4 mini · Direct question · first choice
“Top Pick: Mimecast Advanced Email Security ... arguably the best all-around fit for mid-sized B2B companies”DeepSeek V4 Flash · Paraphrase question · first choice
“Best All-in-One Platform: Mimecast ... rated as best for mid-market and enterprise organizations”Kimi K2 · Direct question · first choice
“Top-ranked for the second year—37% fewer incidents than average.”Grok 4.20 · Negative question · first choice
What gives them pause
“Mimecast — typically priced for mid-market and enterprise”DeepSeek V4 Flash · Budget-constrained question · warning
“Choose Mimecast or Proofpoint only if archiving, continuity, DLP, or regulated-industry controls justify the additional platform complexity.”Perplexity Sonar · Direct question · warning
“Unlike legacy Secure Email Gateways (SEGs) like Mimecast or Proofpoint Enterprise, ICES solutions deploy via cloud APIs in minutes”Gemini 3.5 Flash · Paraphrase question · warning
“Proofpoint and Mimecast can be strong enterprise options, but gateway products require mail-flow or MX-record changes”Perplexity Sonar · Negative question · warning
Also on the shortlist
The products named in the same answers as Mimecast Email Security, over the 154 answers that named it, and how often each was the first choice instead.
| Product | Named together | Picked instead | |
|---|---|---|---|
| 142 | 30 | Compare → | |
| 127 | 55 | Compare → | |
| 90 | 15 | Compare → | |
| 80 | 2 | Compare → | |
| 74 | 7 | Compare → | |
| 47 | 6 | Compare → | |
| 34 | 0 | View → | |
| 21 | 0 | View → | |
| 20 | 2 | View → | |
| 18 | 1 | View → |
What the models named instead of Mimecast Email Security →
A side-by-side page exists where both products are among a category's top eight.
At a glance
Stated on Mimecast Email Security's own site, not checked by Gane.
- For
- organizations
- Price stated
- predictable monthly subscription fee
- Customers named
- Centrax, Abbot Point Operations, Bray IT Solutions, Quotient Sciences
- Also from Mimecast
- Mimecast Archiving, Mimecast Cloud Archive, Mimecast Engage, Mimecast Incydr
How this is measured
Fourteen AI models from 12 labs are asked the same buying questions six ways, for three company sizes. Standings refresh every edition.
Gane sells AI visibility software. No company can pay to change a result.
Read the method →Sources returned with these answers
Fourteen of the fourteen models returned a source list in this edition: five return the pages they cited and nine the search results they consulted. These counts come from 134 of the 154 answers that named Mimecast Email Security and are not a share of its labels.
Domains cited
387 of the 417 domain citations in answers naming Mimecast Email Security came from a third party's page.
Pages cited
Pages are listed as the models cited them.
By model
| Model | First choice | Alternative | Mention | Warning | Labels |
|---|---|---|---|---|---|
| Claude Haiku 4.5 | 0 | 1 | 2 | 0 | 3 |
| GPT-5.4 mini | 1 | 1 | 1 | 0 | 3 |
| Gemini 3.5 Flash | 0 | 2 | 0 | 3 | 5 |
| Perplexity Sonar | 0 | 2 | 0 | 2 | 4 |
| Grok 4.20 | 1 | 4 | 0 | 1 | 6 |
| Mistral Small | 0 | 1 | 3 | 1 | 5 |
| DeepSeek V4 Flash | 1 | 3 | 0 | 1 | 5 |
| Llama 4 Maverick | 0 | 0 | 2 | 0 | 2 |
| Qwen 3.7 Flash | 0 | 2 | 0 | 1 | 3 |
| Kimi K2 | 1 | 1 | 1 | 1 | 4 |
| GLM 4.7 FlashX | 1 | 2 | 2 | 0 | 5 |
| MiniMax M2.5 | 0 | 3 | 0 | 0 | 3 |
| GPT-6 Luna | 0 | 1 | 0 | 0 | 1 |
| Muse Glimmer 30B | 0 | 3 | 2 | 0 | 5 |