There are three ways to use the emails provided with your teaching series…
1) If you use Mailchimp, you can just open the Mailchimp template in Mailchimp and edit it there (recommended).
2) If you use a regular mailbox, like a gmail or outlook mailbox, you can copy and paste the text from the email pages. Those types of mailboxes do not allow you to send newsletter style emails, so the images won’t be useful. You will send the email text only.
3)The HTML file is for those who use something similar to Mailchimp, like Constant Contact or GetResponse. You can import the HTML as a template in those types of services.