Can I use any other [shortcode]'s in my emails - other than the [ec_shortcode]'s?

We don't advise doing this. The 3rd party shortcodes will work but because they are not specifically created for use in the WooCommerce emails, like our [ec_shortcode]'s are, they will most likely break the layout of your email.

(1) Emails must be created using tables, whereas 3rd party shortcodes are usually made of div and span elements intended for use on the front-end of your website - so they will most likely break the layout of your email.
(2) 3rd party shortcodes will rely on their own CSS and JS files being included in order to control their layout and provide functionality - these files are not included in an email so the shortcode will most likely break the layout of your email again.