How to add position counter in WooCommerce email?

Question

WordPress

Hello, how can I add a position counter in a WooCommerce email?
Is there any filter for this?
That is:
1. product 1
2. product 2
3. product 3
or
a. product 1
b. product 2
c. product 3
And also the question of who knows a multifunctional plug-in for working with email templates (there is a need to leave the site user with the opportunity to change it a little over time).
About existence

• WooCommerce Email Customizer
  
• YITH WooCommerce Email Templates
  

I know.
Thanks a lot !