Juan Ng, yes I have and per the last section of the article, it seems like this feature is "built-in" to the product and cannot be turned off. The issue I'm dealing with is specifically https-based hyperlinking with I'd like the option to turn off.

Example case:

User replies to ticket asking for instructions to do something.
I reply back to ticket (directly via email channel) including already hyperlinked response to a KB article.
User gets a hyperlinked URL followed by same URL (in parathesis) also hyperlinked.

It's clumsy both for me and my end users.

Seems like this would be a feature request.