Trend Micro Toolbar's 'Rate links on web pages' feature can alter email content in Mozilla Firefox when links are present. Follow these steps to fix the issue.
- Launch Mozilla Firefox.
- Locate the extensions icon or puzzle piece icon in your browser.
- Select the Trend Micro Toolbar, then click the three dots at the top right then click Settings.
- Toggle off the Rate links on web pages feature.
- Ensure that Rate links on mouseover is enabled to maintain the ability to assess the safety of links in your email while preventing content display issues.