URL Protect - Blocked Links Unreadable in Microsoft Outlook Dark Mode - Feb 2026

Known Issue

Date Logged	April 11th, 2024
Product(s)	Email Security Cloud Gateway (CG), URL Protect
Status	Not Fixing

Issue

Mimecast is aware of an issue where blocked URL links in URL Protect notifications are unreadable in Microsoft Outlook's Dark Mode due to font color conflicts.

Workaround

• Switch Microsoft Outlook to Light Mode to view the URL links clearly.
• Reach out to your Account Team if you'd like to discuss the issue further.

See Also…

• Targeted Threat Protection - URL Protect - Overview