Create 2025-05-08-open-attachments-with-browser-isolation.mdx (cloudflare#22364)

* Create 2025-05-08-open-attachments-with-browser-isolation.mdx

changelog for new email security feature

* Update src/content/changelog/email-security/2025-05-08-open-attachments-with-browser-isolation.mdx

Co-authored-by: Maddy <[email protected]>

* Update src/content/changelog/email-security/2025-05-08-open-attachments-with-browser-isolation.mdx

Co-authored-by: Maddy <[email protected]>

* Update src/content/changelog/email-security/2025-05-08-open-attachments-with-browser-isolation.mdx

Co-authored-by: Maddy <[email protected]>

* Update src/content/changelog/email-security/2025-05-08-open-attachments-with-browser-isolation.mdx

Co-authored-by: Maddy <[email protected]>

* Update src/content/changelog/email-security/2025-05-08-open-attachments-with-browser-isolation.mdx

Co-authored-by: Maddy <[email protected]>

* Update src/content/changelog/email-security/2025-05-08-open-attachments-with-browser-isolation.mdx

Co-authored-by: Maddy <[email protected]>

* Update src/content/changelog/email-security/2025-05-08-open-attachments-with-browser-isolation.mdx

Co-authored-by: Maddy <[email protected]>

* Update src/content/changelog/email-security/2025-05-08-open-attachments-with-browser-isolation.mdx

Co-authored-by: Maddy <[email protected]>

* Update src/content/changelog/email-security/2025-05-08-open-attachments-with-browser-isolation.mdx

Co-authored-by: Maddy <[email protected]>

* Update src/content/changelog/email-security/2025-05-08-open-attachments-with-browser-isolation.mdx

Co-authored-by: Maddy <[email protected]>

* Update src/content/changelog/email-security/2025-05-08-open-attachments-with-browser-isolation.mdx

Co-authored-by: Kody Jackson <[email protected]>

* Update src/content/changelog/email-security/2025-05-08-open-attachments-with-browser-isolation.mdx

Co-authored-by: Kody Jackson <[email protected]>

* Update src/content/changelog/email-security/2025-05-08-open-attachments-with-browser-isolation.mdx

Co-authored-by: Kody Jackson <[email protected]>

* Update src/content/changelog/email-security/2025-05-08-open-attachments-with-browser-isolation.mdx

Co-authored-by: Kody Jackson <[email protected]>

* Update src/content/changelog/email-security/2025-05-08-open-attachments-with-browser-isolation.mdx

Co-authored-by: Kody Jackson <[email protected]>

* whoops, how'd that get in there?

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Co-authored-by: Maddy <[email protected]>
Co-authored-by: Kody Jackson <[email protected]>

Author: 3 people

src/content/changelog/email-security/2025-05-08-open-attachments-with-browser-isolation.mdx

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+---
+title: Open email attachments with Browser Isolation
+description: A new attachment section in Email Security allows you to safely open attachments to view and investigate.
+date: 2025-05-08T19:20:11Z
+---
+
+You can now safely open email attachments to view and investigate them.
+
+What this means is that messages now have a **Attachments** section. Here, you can view processed attachments and their classifications (for example, _Malicious_, _Suspicious_, _Encrypted_). Next to each attachment, a **Browser Isolation** icon allows your team to safely open the file in a **clientless, isolated browser** with no risk to the analyst or your environment.
+
+
+To use this feature, you must:
+
+- Enable **Clientless Web Isolation** in your Zero Trust settings.
+- Have **Browser Isolation (BISO)** seats assigned.
+
+For more details, refer to our [setup guide](/cloudflare-one/policies/browser-isolation/setup/clientless-browser-isolation/).
+
+Some attachment types may not render in Browser Isolation. If there is a file type that you would like to be opened with Browser Isolation, reach out to your Cloudflare contact. 
+
+
+This feature is available across all CES packages:
+
+- **CES_ADVANTAGE**
+- **CES_ENTERPRISE**
+- **CES_ENTERPRISE_PHISHGUARD**