# GLIMPS Email Security for M365 vs Mimecast Advanced Email Security: side-by-side comparison (2026) [GLIMPS Email Security for M365](https://cybersectools.com/tools/glimps-email-security-for-m365) is a commercial [email security platforms](https://cybersectools.com/categories/email-security-platforms) solution by [GLIMPS](https://cybersectools.com/companies/glimps). [Mimecast Advanced Email Security](https://cybersectools.com/tools/mimecast-advanced-email-security) is a commercial [email security platforms](https://cybersectools.com/categories/email-security-platforms) solution by [Mimecast](https://cybersectools.com/companies/mimecast). Features, integrations, deployment and the company behind each one, side by side. ## Our take What our shortlists say about the one we picked. ### [Mimecast Advanced Email Security](https://cybersectools.com/tools/mimecast-advanced-email-security) Best for: Companies wanting a full gateway with clear tracking It earns its place because you can run it as a gateway or through an API, and archiving and continuity sit in the same platform, which suits a company with a mixed mail setup. Social graphing and computer vision aim at impersonation, not only malware. Weigh whether you need the archive and continuity parts, since they change how much of your mail flow depends on one vendor. From [Best Email Security Solutions for Business](https://cybersectools.com/shortlists/best-email-security-platforms), Fall 2026. Reviewed by [Nika (Nikoloz) Kokhreidze](https://cybersectools.com/about). Need the answer fast? [Best Email Security Solutions for Business](https://cybersectools.com/shortlists/best-email-security-platforms) picks Proofpoint Core Email Protection, Microsoft Defender for Office 365, Mimecast Advanced Email Security and 4 more. ## Side-by-side comparison | | GLIMPS Email Security for M365 | Mimecast Advanced Email Security | |---|---|---| | Pricing model | Commercial | Commercial | | Category | Email Security Platforms | Email Security Platforms | | Verified | No | No | | Deployment type | Hybrid | Hybrid | | Company size fit | SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise | | Company | GLIMPS | Mimecast | | Headquarters | – | – | ### Use cases and capabilities | | GLIMPS Email Security for M365 | Mimecast Advanced Email Security | |---|---|---| | Zero Day | Yes | – | | DKIM | Yes | – | | DMARC | Yes | – | | Microsoft 365 | Yes | Yes | ### Core features **GLIMPS Email Security for M365** 10 features listed. Sign in on the page to see them. **Mimecast Advanced Email Security** 10 features listed. Sign in on the page to see them. ### Integrations **GLIMPS Email Security for M365** 2 integrations listed. Sign in on the page to see them. **Mimecast Advanced Email Security** 31 integrations listed. Sign in on the page to see them. ## GLIMPS Email Security for M365 vs Mimecast Advanced Email Security FAQ Common questions when comparing GLIMPS Email Security for M365 vs Mimecast Advanced Email Security for email security platforms. ### What is the difference between GLIMPS Email Security for M365 and Mimecast Advanced Email Security? **GLIMPS Email Security for M365**: AI-based email security for M365 with phishing, BEC & malware detection. Built by GLIMPS. **Mimecast Advanced Email Security**: Email security platform protecting M365 & Google Workspace from threats. Built by Mimecast. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes GLIMPS Email Security for M365 and Mimecast Advanced Email Security? **GLIMPS Email Security for M365** is made by GLIMPS. **Mimecast Advanced Email Security** is made by Mimecast. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is GLIMPS Email Security for M365 a good alternative to Mimecast Advanced Email Security? Often, yes. GLIMPS Email Security for M365 and Mimecast Advanced Email Security are both Email Security Platforms products, and both cover Microsoft 365. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [GLIMPS Email Security for M365 vs OPSWAT MetaDefender Email Security](https://cybersectools.com/compare/glimps-email-security-for-m365-vs-opswat-metadefender-email-security) - [GLIMPS Email Security for M365 vs ID Agent Graphus](https://cybersectools.com/compare/glimps-email-security-for-m365-vs-id-agent-graphus) - [GLIMPS Email Security for M365 vs Infonaligy Proofpoint Email Security](https://cybersectools.com/compare/glimps-email-security-for-m365-vs-infonaligy-proofpoint-email-security) - [Mimecast Advanced Email Security vs OPSWAT MetaDefender Email Security](https://cybersectools.com/compare/mimecast-advanced-email-security-vs-opswat-metadefender-email-security) - [Mimecast Advanced Email Security vs ID Agent Graphus](https://cybersectools.com/compare/id-agent-graphus-vs-mimecast-advanced-email-security) - [Mimecast Advanced Email Security vs Infonaligy Proofpoint Email Security](https://cybersectools.com/compare/infonaligy-proofpoint-email-security-vs-mimecast-advanced-email-security) ## Alternatives to each - [See all GLIMPS Email Security for M365 alternatives](https://cybersectools.com/alternatives/glimps-email-security-for-m365) - [See all Mimecast Advanced Email Security alternatives](https://cybersectools.com/alternatives/mimecast-advanced-email-security) --- Source: https://cybersectools.com/compare/glimps-email-security-for-m365-vs-mimecast-advanced-email-security For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/glimps-email-security-for-m365.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on GLIMPS Email Security for M365 and Mimecast Advanced Email Security: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md