There are cases of malformed messages where we have to close out a style when there is a "nested" opening tag:
<style>
.....
....
<div>
text starts here - the style tag is assumed closed at this point
</div>
</html>
Happens when people copy / paste html snippets into their newsletters (and not paying attention) or even with automated template / snippet generators.
As you can see, in these cases the <style> may not even close out ever. And without this special case, we were getting "help help, message text does not show in your app".
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I'm willing to try and adjust our code for your nested comments case (we already handle those, but there is room for improvement it seems).
Please send a sample .eml to support / at / aqua-mail / dot com.