Issue with html text in email body

Hi [mention:a5732d26eb3840a7b63ef0bcb4455329:e9ed411860ed4f2ba0265705b8793d05] , Here is the corrected version

<p style="font-size: 10pt;">Dear colleagues,</p>

<p style="font-size: 10pt;">Please note that the EU approval by CHMP Positive opinion has been granted on 05 December 2024 for
KEYTRUDA (pembrolizumab) for variation EMEA/H/C/3820/II/016, which removes the instruction "Remove from light" for the diluted product from the Product Information.</p>

<p style="font-size: 10pt;">There is no corresponding CCDS update for this update; however, the correction is linked to CCDS-MK3475-IV-042024.</p>

<p style="font-size: 10pt;">This variation impacts Section 6.3 of the KEYTRUDA SPC, as well as the information for healthcare professionals in the leaflet.</p>

<p style="font-size: 10pt;"><strong>Priority level:</strong> Standard</p>

<p style="font-size: 10pt;">Please note that, due to the approval of procedures II/0160 + II/0161 + II/0162 in the same time frame, only consolidated PI’s with the changes from all three procedures are available in MUSE - <a href="">muse.merck.com">muse.merck.com</.../p>

<p style="font-size: 10pt;">Therefore, we attach the English WRM and CRT PI with the changes of II/0162 only to this mail.</p>

<p style="font-size: 10pt;">Thank you and warm regards,</p>

<p style="font-size: 10pt;">Natalia</p>

Hi[mention:a5732d26eb3840a7b63ef0bcb4455329:e9ed411860ed4f2ba0265705b8793d05] 

Try this it may help you.

<p style="font-size: 10pt;">Dear colleagues,</p>
<p style="font-size: 10pt;">
Please note that the EU approval by CHMP Positive opinion has been granted on
05 December 2024 for<br />KEYTRUDA (pembrolizumab) for variation
EMEA/H/C/3820/II/016, which removes the instruction "Remove from light" for
the diluted product from the Product Information.
</p>
<p style="font-size: 10pt;">
There is no corresponding CCDS update for this update; however, the correction
is linked to CCDS-MK3475-IV-042024.
</p>
<p style="font-size: 10pt;">
This variation impacts Section 6.3 of the KEYTRUDA SPC, as well as the
information for healthcare professionals in the leaflet.
</p>
<p style="font-size: 10pt;">Priority level: Standard</p>
<p style="font-size: 10pt;">
Please note that, due to the approval of procedures II/0160 + II/0161 +
II/0162 in the same time frame, only consolidated PI&rsquo;s with the changes
from all three procedures are available in MUSE -
muse.merck.com"&gt;muse.merck.com
</p>
<p style="font-size: 10pt;">
Therefore, we attach the English WRM and CRT PI with the changes of II/0162
only to this mail.
</p>
<p style="font-size: 10pt;">Thank you and warm regards,</p>
<p style="font-size: 10pt;">Natalia</p>

The prior examples offered here by other users demonstrate some nice clean HTML.  I think the main takeaway is, you should probably stick to hand-entered basic HTML for emails instead of pasting in whatever junk gets auto-generated elsewhere (it looks like your original version was generated by Word or something, with lots of overhead and fluff and unnecessary junk included).  The basics necessary for a simple HTML email are pretty easy.

Already answered this question here:

 https://community.appian.com/discussions/f/general/38389/some-parts-of-the-html-text-are-getting-removed 

Maybe ask Chat GPT to clean up your html?