Activation Email Issue

Hi,

I am using Juniper and Tutor 10.5.0.

Is there a document to customize the different parts of the activation email, i.e.

(1) Logo (default edX logo) and link address (goes to example.com)
(2) Our mailing address is: (I get blank here)

There are threads that state to change in admin/sites/sites but in the Sites option in Django Admin, there are many site names, for example, mysite.com, studio.mysite.com, etc. Do I delete example.com here?

There are other threads that mention to change base_body.html, body.html, body.txt. But these changes only work for the password reset email.

Thank you.