# Bitdefender GravityZone Security for Exchange vs Cloudmark Authority: side-by-side comparison (2026) [Bitdefender GravityZone Security for Exchange](https://cybersectools.com/tools/bitdefender-gravityzone-security-for-exchange) is a commercial [email security platforms](https://cybersectools.com/categories/email-security-platforms) solution by [Bitdefender](https://cybersectools.com/companies/bitdefender). [Cloudmark Authority](https://cybersectools.com/tools/cloudmark-authority) is a commercial [email security platforms](https://cybersectools.com/categories/email-security-platforms) solution by [Cloudmark](https://cybersectools.com/companies/cloudmark). Features, integrations, deployment and the company behind each one, side by side. 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 | | Bitdefender GravityZone Security for Exchange | Cloudmark Authority | |---|---|---| | Pricing model | Commercial | Commercial | | Category | Email Security Platforms | Email Security Platforms | | Verified | No | No | | Deployment type | On-Premises | On-Premises | | Company size fit | SMB, Mid-Market, Enterprise | Enterprise | | Company | Bitdefender | Cloudmark | | Headquarters | – | – | ### Use cases and capabilities | | Bitdefender GravityZone Security for Exchange | Cloudmark Authority | |---|---|---| | Spam Prevention | Yes | Yes | | Zero Day | Yes | – | | Microsoft 365 | Yes | – | ### Core features **Bitdefender GravityZone Security for Exchange** 10 features listed. Sign in on the page to see them. **Cloudmark Authority** 8 features listed. Sign in on the page to see them. ### Integrations **Bitdefender GravityZone Security for Exchange** 3 integrations listed. Sign in on the page to see them. **Cloudmark Authority** No integrations listed. ## Which one fits you Based on what each listing shows: deployment, company size, price and open source. - [Bitdefender GravityZone Security for Exchange](https://cybersectools.com/tools/bitdefender-gravityzone-security-for-exchange) fits if you are a small business or a mid-market company. ## Bitdefender GravityZone Security for Exchange vs Cloudmark Authority FAQ Common questions when comparing Bitdefender GravityZone Security for Exchange vs Cloudmark Authority for email security platforms. ### What is the difference between Bitdefender GravityZone Security for Exchange and Cloudmark Authority? **Bitdefender GravityZone Security for Exchange**: Email security for Microsoft Exchange servers with antispam and antimalware. Built by Bitdefender. **Cloudmark Authority**: Carrier-grade email security for ISPs blocking spam, phishing, and malware. Built by Cloudmark. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Bitdefender GravityZone Security for Exchange and Cloudmark Authority? **Bitdefender GravityZone Security for Exchange** is made by Bitdefender. **Cloudmark Authority** is made by Cloudmark. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is Bitdefender GravityZone Security for Exchange a good alternative to Cloudmark Authority? Often, yes. Bitdefender GravityZone Security for Exchange and Cloudmark Authority are both Email Security Platforms products, and both cover Spam Prevention. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [Bitdefender GravityZone Security for Exchange vs ID Agent Graphus](https://cybersectools.com/compare/bitdefender-gravityzone-security-for-exchange-vs-id-agent-graphus) - [Bitdefender GravityZone Security for Exchange vs SpamTitan for Office 365](https://cybersectools.com/compare/bitdefender-gravityzone-security-for-exchange-vs-spamtitan-for-office-365) - [Bitdefender GravityZone Security for Exchange vs ESET Cloud Office Security](https://cybersectools.com/compare/bitdefender-gravityzone-security-for-exchange-vs-eset-cloud-office-security) - [Cloudmark Authority vs ID Agent Graphus](https://cybersectools.com/compare/cloudmark-authority-vs-id-agent-graphus) - [Cloudmark Authority vs SpamTitan for Office 365](https://cybersectools.com/compare/cloudmark-authority-vs-spamtitan-for-office-365) - [Cloudmark Authority vs ESET Cloud Office Security](https://cybersectools.com/compare/cloudmark-authority-vs-eset-cloud-office-security) ## Alternatives to each - [See all Bitdefender GravityZone Security for Exchange alternatives](https://cybersectools.com/alternatives/bitdefender-gravityzone-security-for-exchange) - [See all Cloudmark Authority alternatives](https://cybersectools.com/alternatives/cloudmark-authority) --- Source: https://cybersectools.com/compare/bitdefender-gravityzone-security-for-exchange-vs-cloudmark-authority For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/bitdefender-gravityzone-security-for-exchange.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Bitdefender GravityZone Security for Exchange and Cloudmark Authority: 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