CSS styles in templates?

Is there a way to add CSS to any of the templates? Can you do inline CSS with them? Not sure if the templates allow for body, head, etc tags. Or, better yet, is there a way to use ACY Mailing templates to send GC vouchers, coupons, etc?

Hello,

If your editor will allow it then you can add css.=

Maybe in the future youou could use an extension which will allow you to add code, something like this:
http://extensions.joomla.org/extension/sourcerer

This would not yet work because it adds place holders into the code that need to be parsed at run time through the plugin system. This is not currently called in AwoCoupon

And no, cant use AcyMailing.