# Mimecast Advanced Email Security vs Sublime Security Sublime Rules: side-by-side comparison (2026) [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). [Sublime Security Sublime Rules](https://cybersectools.com/tools/sublime-security-sublime-rules) is a free [detection engineering](https://cybersectools.com/categories/detection-engineering) solution by [Sublime Security](https://cybersectools.com/companies/sublime-security). 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 | | Mimecast Advanced Email Security | Sublime Security Sublime Rules | |---|---|---| | Pricing model | Commercial | Free | | Category | Email Security Platforms | Detection Engineering | | Verified | No | No | | Deployment type | Hybrid | On-Premises | | Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise | | Company | Mimecast | Sublime Security | | Headquarters | – | – | ### Use cases and capabilities | | Mimecast Advanced Email Security | Sublime Security Sublime Rules | |---|---|---| | Microsoft 365 | Yes | – | | Detection Rules | – | Yes | | Open Source | – | Yes | | YARA | – | Yes | ### Core features **Mimecast Advanced Email Security** 10 features listed. Sign in on the page to see them. **Sublime Security Sublime Rules** 10 features listed. Sign in on the page to see them. ### Integrations **Mimecast Advanced Email Security** 31 integrations listed. Sign in on the page to see them. **Sublime Security Sublime Rules** No integrations listed. ## Which one fits you Based on what each listing shows: deployment, company size, price and open source. - [Mimecast Advanced Email Security](https://cybersectools.com/tools/mimecast-advanced-email-security) fits if you need both cloud and on-premises options. - [Sublime Security Sublime Rules](https://cybersectools.com/tools/sublime-security-sublime-rules) fits if you need to run it on your own servers, you are a startup, you need a free product and you want an open-source product. ## Mimecast Advanced Email Security vs Sublime Security Sublime Rules FAQ Common questions when comparing Mimecast Advanced Email Security vs Sublime Security Sublime Rules for email security platforms. ### What is the difference between Mimecast Advanced Email Security and Sublime Security Sublime Rules? **Mimecast Advanced Email Security**: Email security platform protecting M365 & Google Workspace from threats, built by Mimecast. **Sublime Security Sublime Rules**: Open-source detection rules for email attacks like BEC, phishing, and malware, built by Sublime Security. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Mimecast Advanced Email Security and Sublime Security Sublime Rules? **Mimecast Advanced Email Security** is made by Mimecast. **Sublime Security Sublime Rules** is open-source. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is Mimecast Advanced Email Security a good alternative to Sublime Security Sublime Rules? In part. Mimecast Advanced Email Security and Sublime Security Sublime Rules are not in the same category on CybersecTools. Key differences: Mimecast Advanced Email Security is Commercial while Sublime Security Sublime Rules is Free. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [Mimecast Advanced Email Security vs Fortinet FortiMail Email and Workspace Security](https://cybersectools.com/compare/fortinet-fortimail-email-security-vs-mimecast-advanced-email-security) - [Mimecast Advanced Email Security vs Cellopoint Cloud Email Security Solution](https://cybersectools.com/compare/cellopoint-cloud-email-security-solution-vs-mimecast-advanced-email-security) - [Mimecast Advanced Email Security vs ESET Cloud Office Security](https://cybersectools.com/compare/eset-cloud-office-security-vs-mimecast-advanced-email-security) - [Sublime Security Sublime Rules vs Fortinet FortiMail Email and Workspace Security](https://cybersectools.com/compare/fortinet-fortimail-email-security-vs-sublime-security-sublime-rules) - [Sublime Security Sublime Rules vs Cellopoint Cloud Email Security Solution](https://cybersectools.com/compare/cellopoint-cloud-email-security-solution-vs-sublime-security-sublime-rules) - [Sublime Security Sublime Rules vs ESET Cloud Office Security](https://cybersectools.com/compare/eset-cloud-office-security-vs-sublime-security-sublime-rules) ## Alternatives to each - [See all Mimecast Advanced Email Security alternatives](https://cybersectools.com/alternatives/mimecast-advanced-email-security) - [See all Sublime Security Sublime Rules alternatives](https://cybersectools.com/alternatives/sublime-security-sublime-rules) --- Source: https://cybersectools.com/compare/mimecast-advanced-email-security-vs-sublime-security-sublime-rules For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/mimecast-advanced-email-security.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Mimecast Advanced Email Security and Sublime Security Sublime Rules: 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