Are HTML Comment Tags allowed in emails?

Somebody just told me that some clients get confused and actually display comments in your HTML email code. Somebody else told me this isn't true.

Anybody know of this being an issue?

Mathew Mathew, 7 years ago

We haven't seen that happen in our testing so far - do you know which email client they were referring to?

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Jayneylou, 7 years ago

I've never seen anything in regards to browser showing content of comments tags but there are a couple of reports of spamfilters (spam assasin mainly) reading and scoring the content of comments tags

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