Improve notification email readability by making the issue stand out more

Even in the new HTML email template introduced in v2.4, one must carefully look what the actual problem is. The small WARN/CRIT badges help in the details, but you could do more to improve the UX.

Instead of requiring the recipient to visually search for the badge, then backtracking the text to find the beginning of the triggering property, and just then actually reading it, could you please highlight the relevant item? For example, write it with red color, or apply a light red background color for it. It's probably as simple as an HTML span tag in the paragraph.

Note: I understand that the information is pulled directly from the live status in Checkmk. Any adjustments to how this data displays in the email would probably require extensive research and testing to ensure a consistently positive impact across all use cases. However, this small tweak could still elevate the email notifications' readability and usefulness a lot.