Email customization - overrides directory structure

Hi,

I would like to customize the overall template and a number of the sub email templates in Easysocial.

Of course I want to do this as overrides in the template so that changes are not overwritten every time I update/upgrade Easysocial.

My question is what directory structure do I need to make it work?

In ES - template.php is located in wireframe/emails/html.
Then all of the sub templates are located in different folders. albums/badges/comments/conversations etc etc

I have and overrides folder already set up at my_template/html/com_easysocial/emails.......

So the question is, what structure do I need after emails/???

For example, the modified template.php file - should I put it:
1. my_template/html/com_easysocial/emails/template.php OR
2. my_template/html/com_easysocial/emails/html/template.php

Then for the next level, where (for example) would I put a customized verify.php file?
1. my_template/html/com_easysocial/emails/verify.php OR
2. my_template/html/com_easysocial/emails/html/verify.php OR
3. my_template/html/com_easysocial/emails/html/registration/verify.php OR
4. my_template/html/com_easysocial/emails/registration/verify.php

Thanks for your help. I did look extensively in the forum and the documentation before asking