HTML tags in Custom HTML section of mail notifcation do not work in 2.4.0p4

Checkmk Notification

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lt;h2 style="color:#d9534f; font-family:Arial, sans-serif;">Checkmk Notification
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grafik

grafik

The help for this field states the following:

Only simple tags like β€˜h1’, β€˜b’ or β€˜i’ are allowed.

Perhaps style and table is a bit more than β€œsimple tags”.

There is a list in the user guide what should be allowed here:

Why was this new restriction introduced? We used other tags (e.g., <big>) in the past without issues.

I’d like to configure the email body the same way it was in version 2.3 β€” the new header takes up too much space:

Ideally, there would be a checkbox to re-enable the old layout.

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