Astuces Développeur Multimédia

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http://woork.blogspot.com/2009/02/interesting-html-form-validators-for.html

http://code.google.com/p/searchable-behaviour-for-cakephp/

Unfortunately this function is not available. So for customers who are asking about video in the mail's body, you can reply it's technically impossible.
More info about video in email