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Communications archiving and compliance · November 2026 Edition
MailStore Server vs OpenText Core Business Communication Archive
Zero of fourteen models named MailStore Server first on the direct prompt; one named OpenText Core Business Communication Archive. MailStore Server was named by twelve of the fourteen models and OpenText Core Business Communication Archive by ten and MailStore Server carries 20 labels and OpenText Core Business Communication Archive 21, so the shares are not directly comparable.
Named in one category this edition.
Named in one category this edition.
First-choice share12%2%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate5%0%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#3#7A position in a field of 13; printed, not drawn.
Labels2021A 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 OpenText Core Business Communication 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 modelsOpenText Core Business Communication Archive
Direct01
Paraphrase10
Comparative00
Budget-constrained60
Scale-constrained00
Negative001 against MailStore Server
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 OpenText Core Business Communication 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 OpenText Core Business Communication Archive first choice named as an alternative argued againstblank: not namedEach cell is one answer, MailStore Server on the left and OpenText Core Business Communication Archive on the right.The direct prompt
The plain question, one answer per model, grouped by where MailStore Server and OpenText Core Business Communication Archive stood in it.
OpenText Core Business Communication Archive first, MailStore Server not the choice
1 of 14 modelsMailStore Server was named in the answer but not as the choice, or not at all.Perplexity SonarOpenText Core Business Communication Archive alternatives: Barracuda Cloud Archiving Service, Jatheon, Smarsh Enterprise Archive, SteelEye
Neither was the first choice, one was named
4 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
Mistral SmallSmarsh Enterprise Archive alternatives: MessageWatcher, OpenText Core Business Communication Archive, Theta Lake
DeepSeek V4 FlashMimecast Cloud Archive alternatives: Global Relay Archive, Google Vault, MailStore Server, Smarsh Enterprise Archive
GLM 4.7 FlashXSmarsh Enterprise Archive alternatives: MailStore Server, Microsoft Purview, Mimecast Cloud Archive, OpenText Core Business Communication Archive
Neither was named
9 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
Gemini 3.5 FlashSmarsh Enterprise Archive alternatives: Global Relay Archive, Jatheon, Mimecast Cloud Archive, Theta Lake
Grok 4.20Mimecast Cloud Archive alternatives: Pagefreezer, Smarsh Enterprise Archive, Theta Lake
Llama 4 Maverickno first choice
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
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
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 fourteen points.
MailStore Server15%#2 of 12OpenText Core Business Communication Archive2%#6 of 12Mid-marketThe figures above
MailStore Server leads by eleven points.
MailStore Server12%#3 of 13OpenText Core Business Communication Archive2%#7 of 13Enterprise
The order flips: OpenText Core Business Communication Archive leads at enterprise.
OpenText Core Business Communication Archive5%#5 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 OpenText Core Business Communication Archive
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Three of four in this category shown.
“For most mid-market B2B companies, OpenText Core Business Communication Archive is the strongest overall choice” Perplexity Sonar · direct prompt · first choice
“OpenText Core Business Communication Archive or Smarsh. OpenText gives broad 50+ source capture with unlimited cloud storage.” Muse Glimmer 30B · paraphrase prompt · alternative
“best if you want a broad, cloud-native archive covering email, chat, social media, and collaboration data in one repository” Perplexity Sonar · paraphrase prompt · alternative
Also compared
Smarsh Enterprise Archive vs MailStore ServerSmarsh Enterprise Archive vs OpenText Core Business Communication ArchiveMicrosoft Purview vs MailStore ServerMicrosoft Purview vs OpenText Core Business Communication ArchiveMailStore Server vs Mimecast Cloud ArchiveMailStore Server vs JatheonMailStore Server vs Google VaultMailStore Server vs Proofpoint Enterprise ArchiveMimecast Cloud Archive vs OpenText Core Business Communication ArchiveJatheon vs OpenText Core Business Communication ArchiveGoogle Vault vs OpenText Core Business Communication ArchiveOpenText Core Business Communication 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.