[Email security] Add more info about Browser Isolation

src/content/docs/cloudflare-one/email-security/investigation/search-email.mdx

@@ -173,6 +173,10 @@ Cloudy analyzes the underlying detection code and generates a description of the
 
 You can open links in Security Center or [Browser Isolation](/cloudflare-one/remote-browser-isolation/), or copy and paste the link so you can investigate content in external tools.
 
+When you select a link in a suspicious email, you risk exposing your device and your company's network to malware, ransomware, and credential harvesting.
+
+Browser Isolation eliminates any risk of your device being compromised by opening all web content from unverified or suspicious sources in a safe, disposable remote browser session hosted by Cloudflare.
+
 To open links in Security Center:
 
 1. In [Cloudflare One](https://one.dash.cloudflare.com), go to **Email security** > **Investigation**.
@@ -193,6 +197,8 @@ To open links in Browser Isolation:
 
 Alternatively, you can directly [open links in Browser Isolation](/cloudflare-one/remote-browser-isolation/setup/clientless-browser-isolation/#open-links-in-browser-isolation).
 
+When you open a link from an email, Cloudflare will present you with a blue bar. This indicates that the page is isolated and that you are protected from any potential malicious content on that page.
+
 :::note
 If you purchased Gateway and [Browser Isolation](/cloudflare-one/remote-browser-isolation/), you can perform more actions when opening links.
 :::