My buddy worked at an advertising agency, and brought me on as a intern. They had a lot of contracts with companies where they would manage their newsletters through mail chimp.Can you go more into detail about the job? I've seen a YouTuber also mention it as a good position to get your foot in the door
I would get a photoshop file from the designer and then I would recreate it with html and inline css. Then I would upload it to mailchimp , run it through all of the email client simulators, send it to everyone in the office for final approval (when you look at something for a long time you lose the ability to really judge it well) In my experience you basically create a template and then just tweak it.
edit: If I were you I would find a template, tweak it, and then make an email html version of your resume. get a free mailchimp account and send yourself the emails so you know what they look like