Communications archiving and compliance · November 2026 Edition
MailStore Server vs Mimecast Cloud Archive
Zero of fourteen models named MailStore Server first on the direct prompt; two named Mimecast Cloud Archive. MailStore Server was named by twelve of the fourteen models and Mimecast Cloud Archive by fourteen and MailStore Server carries 20 labels and Mimecast Cloud Archive 44, so the shares are not directly comparable.
Named in one category this edition.
Named in one category this edition.
First-choice share12%7%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate5%9%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#3#4A position in a field of 13; printed, not drawn.
Labels2044A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, MailStore Server reading right to left. Rank and label count are printed, not drawn.Smarsh Enterprise Archive was named alongside these two in ten of the fourteen direct answers. Smarsh Enterprise Archive vs MailStore Server · Smarsh Enterprise Archive vs Mimecast Cloud Archive · Microsoft Purview vs MailStore Server
Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all fourteen models, for a mid-market B2B company; rank is within the category; every quote names the model and the prompt it came from. Both figures come from the communications archiving and compliance page.
By framing
How many of the fourteen models made each the first choice, per way of asking, and how many argued against it.
MailStore ServerFirst choices, of fourteen modelsMimecast Cloud Archive
Direct02
Paraphrase12
Comparative001 against Mimecast Cloud Archive
Budget-constrained60
Scale-constrained00
Negative001 against MailStore Server · 3 against Mimecast Cloud Archive
Bars are first choices, 0 to 14 each sideModels that argued againstA model can name both, so the two sides of a row do not sum to fourteen.
Every model, every framing
The eighty-four answers behind the chart above, one cell each: where MailStore Server and Mimecast Cloud Archive stood in it.
| Model | Direct | Paraphrase | Comparative | Budget-constrained | Scale-constrained | Negative |
|---|---|---|---|---|---|---|
| Claude Haiku 4.5 | | | | |||
| GPT-5.4 mini | | |||||
| Gemini 3.5 Flash | | | | | ||
| Perplexity Sonar | | | | | ||
| Grok 4.20 | | | | | ||
| Mistral Small | | | | | ||
| DeepSeek V4 Flash | | | | | ||
| Llama 4 Maverick | ||||||
| Qwen 3.7 Flash | | | | | ||
| Kimi K2 | | | | | ||
| GLM 4.7 FlashX | | | | |||
| MiniMax M2.5 | | | | | ||
| GPT-6 Luna | | | | |||
| Muse Glimmer 30B | | | | |
MailStore Server Mimecast Cloud Archive first choice named as an alternative argued againstblank: not namedEach cell is one answer, MailStore Server on the left and Mimecast Cloud Archive on the right.The direct prompt
The plain question, one answer per model, grouped by where MailStore Server and Mimecast Cloud Archive stood in it.
Mimecast Cloud Archive first, MailStore Server an alternative
2 of 14 modelsMailStore Server was named in the answer but not as the choice, or not at all.Grok 4.20Mimecast Cloud Archive alternatives: Pagefreezer, Smarsh Enterprise Archive, Theta Lake
DeepSeek V4 FlashMimecast Cloud Archive alternatives: Global Relay Archive, Google Vault, MailStore Server, Smarsh Enterprise Archive
Neither was the first choice, one was named
8 of 14 modelsThe answer put something else first and named one of the two as an alternative.Claude Haiku 4.5Smarsh Enterprise Archive alternatives: ComplyKEY MailMeter, Jatheon Enterprise Data Archiving Solution, MailStore Server, Mimecast Cloud Archive
Gemini 3.5 FlashSmarsh Enterprise Archive alternatives: Global Relay Archive, Jatheon, Mimecast Cloud Archive, Theta Lake
Qwen 3.7 FlashMicrosoft Purview alternatives: Google Vault, Intradyn, MessageWatcher, Mimecast Cloud Archive, OpenText™ Core Business Communication Archive
Kimi K2Smarsh Professional Archive alternatives: Barracuda Message Archiver, Jatheon, Mimecast Cloud Archive
GLM 4.7 FlashXSmarsh Enterprise Archive alternatives: MailStore Server, Microsoft Purview, Mimecast Cloud Archive, OpenText Core Business Communication Archive
MiniMax M2.5Smarsh Professional Archive alternatives: Barracuda Message Archiver, Global Relay Archive, Microsoft Purview, Mimecast Cloud Archive
GPT-6 LunaMicrosoft Purview alternatives: Mimecast Cloud Archive, Nuclei, Proofpoint Enterprise Archive, Smarsh Enterprise Archive
Muse Glimmer 30BSmarsh Enterprise Archive alternatives: Global Relay Archive, Jatheon, Mimecast Cloud Archive
Neither was named
4 of 14 modelsThe answer made no first choice from these two in this category.GPT-5.4 miniProofpoint Enterprise Archive, Smarsh Enterprise Archive alternatives: Archive360, Barracuda Cloud Archiving Service, Nuclei Discovery & Archive Suite
Perplexity SonarOpenText Core Business Communication Archive alternatives: Barracuda Cloud Archiving Service, Jatheon, Smarsh Enterprise Archive, SteelEye
Mistral SmallSmarsh Enterprise Archive alternatives: MessageWatcher, OpenText Core Business Communication Archive, Theta Lake
Llama 4 Maverickno first choice
Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.
By buyer segment
The same question asked on behalf of a different buyer. Each standing is computed within its segment and they are never added together. The figures above are the mid-market standing, which is the one the category orders by.
Small business
MailStore Server leads by fifteen points.
MailStore Server15%#2 of 12Mimecast Cloud Archive0%#10 of 12Mid-marketThe figures above
MailStore Server leads by five points.
MailStore Server12%#3 of 13Mimecast Cloud Archive7%#4 of 13Enterprise
The order flips: Mimecast Cloud Archive leads at enterprise.
Mimecast Cloud Archive9%#3 of 10MailStore Server0%#– of 10What the models said about MailStore Server
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Four of five in this category shown.
“MailStore, Mimecast, Proofpoint, Barracuda, and similar email-focused products may be inadequate if you must retain Teams, Slack, WhatsApp, SMS, voice, social media, or trader communications.” Perplexity Sonar · negative prompt · soft negative
“the best communications archiving platform is typically MailStore Server (or its cloud variant, MailStore Cloud)” Grok 4.20 · budget prompt · first choice
“MailStore Server is the best default if your main requirement is email archiving” Perplexity Sonar · budget prompt · first choice
“For a company with a limited budget, MailStore Server is the clear winner” DeepSeek V4 Flash · budget prompt · first choice
What the models said about Mimecast Cloud Archive
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of eight in this category shown.
“Also flagged with a 47% negative rate for small businesses, indicating potential issues with reliability or user experience.” Mistral Small · negative prompt · hard negative
“similar email-focused products may be inadequate if you must retain Teams, Slack, WhatsApp, SMS, voice, social media, or trader communications” Perplexity Sonar · negative prompt · soft negative
“Generally rated but some users report limitations compared to alternatives.” GLM 4.7 FlashX · negative prompt · soft negative
“or Mimecast if you need broader multi-channel archiving (especially if using Slack and Teams together)” MiniMax M2.5 · paraphrase prompt · first choice
“Microsoft Purview (if on M365) OR Mimecast Cloud Archive (if you need broader channel coverage” Kimi K2 · paraphrase prompt · first choice
“I'd recommend Mimecast Cloud Archive as the best overall choice” DeepSeek V4 Flash · direct prompt · first choice
Also compared
Smarsh Enterprise Archive vs MailStore ServerSmarsh Enterprise Archive vs Mimecast Cloud ArchiveMicrosoft Purview vs MailStore ServerMicrosoft Purview vs Mimecast Cloud ArchiveMailStore Server vs JatheonMailStore Server vs Google VaultMailStore Server vs OpenText Core Business Communication ArchiveMailStore Server vs Proofpoint Enterprise ArchiveMimecast Cloud Archive vs JatheonMimecast Cloud Archive vs Google VaultMimecast Cloud Archive vs OpenText Core Business Communication ArchiveMimecast Cloud Archive vs Proofpoint Enterprise ArchiveAll twenty-eight head-to-head pages and the full comms archiving standing
Comparisons are drawn for the top eight products in each category, each against each. The output is the models' output; nothing here is a recommendation by the index.