How to find out which method is used to send emails in WordPress?

Question

WordPress

Wordpress, or rather woocommerce, sends emails in the wrong encoding. I was advised to set up an email server, since I have a regular hosting, I wrote in those. support and they ask me to find out what method is used to send letters. How to do it? Where can you find it?

Answer 1

at the bottom is the file from which everything happens, you need the emails folder