There is no magic potion in email marketing that I would recommend, and you would drink to make your emails look professional. Email marketing is just like tending a garden. You must give both plants and customers exactly what they need and analyse what they need. Over time, your techniques will improve, and you will yield better results. You can take online courses on email marketing in the meantime: https://www.hubspot.com/resources/courses/email-marketing
Besides if you do have any questions give me a call: https://clarity.fm/joy-brotonath