# Jatheon vs MailStore Server: which do AI models recommend for comms archiving, October 2026

IT AI Recommendation Index, October 2026 Edition, Communications archiving and compliance. One of fourteen models named Jatheon first on the direct prompt; one named MailStore Server. Page: https://it-ai-index.com/security/communications-archiving-and-compliance/jatheon-vs-mailstore-server/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Jatheon | 7% | #5 of 12 | 0% | 20 | 10 of 14 |
| MailStore Server | 7% | #6 of 12 | 0% | 13 | 7 of 14 |

## The direct prompt, model by model

- DeepSeek V4 Flash: jatheon first (first choices: Jatheon) (alternatives: Mimecast Cloud Archive, Proofpoint Enterprise Archive)
- Kimi K2: mailstore server first (first choices: Barracuda Cloud Archiving Service, MailStore Server) (alternatives: Jatheon, Mimecast Cloud Archive, Smarsh Enterprise Archive)
- Claude Haiku 4.5: neither first, one named (first choices: Mimecast Cloud Archive, Smarsh Enterprise Archive) (alternatives: Arcserve UDP Archiving, ComplyKEY MailMeter, MailStore Server)
- Grok 4.1 Fast: neither first, one named (first choices: Smarsh Enterprise Archive) (alternatives: Global Relay, Jatheon)
- GPT-5.4 mini: neither named (first choices: Smarsh Enterprise Archive) (alternatives: Archive360, Microsoft Purview, Mimecast Cloud Archive, Theta Lake)
- Gemini 3.5 Flash: neither named (first choices: Mimecast Cloud Archive) (alternatives: Barracuda Cloud Archiving Service, Proofpoint Enterprise Archive, Theta Lake)
- Perplexity Sonar: neither named (first choices: Smarsh Enterprise Archive) (alternatives: Global Relay, Mimecast Archiving, Wordwatch)
- Mistral Small: neither named (first choices: Mimecast Cloud Archive, Smarsh Enterprise Archive) (alternatives: Microsoft Purview, Proofpoint Enterprise Archive)
- Llama 4 Maverick: neither named
- Qwen 3.7 Flash: neither named (first choices: Mimecast Cloud Archive, Proofpoint Enterprise Archive) (alternatives: Global Relay, OpenText, Smarsh Enterprise Archive, Wordwatch)
- GLM 4.7 FlashX: neither named (first choices: Global Relay, Smarsh Enterprise Archive) (alternatives: Mimecast Cloud Archive, Theta Lake, Wordwatch)
- MiniMax M2.5: neither named (first choices: Global Relay, Smarsh Enterprise Archive) (alternatives: Mimecast Cloud Archive, Proofpoint Enterprise Archive, Theta Lake)
- GPT-6 Luna: neither named (first choices: Mimecast Cloud Archive) (alternatives: Global Relay, Microsoft Purview, Proofpoint Enterprise Archive, Smarsh Enterprise Archive)
- Muse Glimmer 30B: neither named (first choices: Barracuda Archiving Service / Barracuda Cloud Archiving Service) (alternatives: Global Relay, Proofpoint Enterprise Archive, Smarsh Enterprise Archive, Wordwatch)

## What the models said about Jatheon

- "Best for: General mid-sized B2Bs looking for an easy-to-use, comprehensive archive without massive enterprise complexity." (Gemini 3.5 Flash, paraphrase prompt, first choice)
- "Jatheon Cloud is the strongest overall recommendation for a mid-market B2B company" (DeepSeek V4 Flash, direct prompt, first choice)
- "My Top Pick for Most Mid-Sized B2B Companies: Jatheon or Mimecast" (Kimi K2, paraphrase prompt, first choice)

## What the models said about MailStore Server

- "1-5 users, on-prem, minimal spend: MailStore Server Starter Kit at $259 one-time ... is the cheapest proven option." (Muse Glimmer 30B, budget prompt, first choice)
- "For the tightest budget, start with MailStore Server (if you can handle on-premises) or Google Vault" (MiniMax M2.5, budget prompt, first choice)
- "Start with Barracuda or MailStore if your needs are primarily email compliance and eDiscovery." (Kimi K2, direct prompt, first choice)

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. Comparisons are drawn for the top eight products in each category. Published under CC BY 4.0; the output is the models' output, and nothing here is a recommendation by the index.