Windows Mail / Outlook email formatting and testing

1- Pick a well formatted email from Windows Mail / Outlook and save as .eml file to use it as a template
2- Use this tool for email testing: https://toolheap.com/test-mail-server-tool/users-manual.html
3- Basically u just need to save your email template in eml format and save it in a folder
4- Then, this tool scans the folder and automatically "sends" the email to your local email client (Outlook) so you can quickly check any changes