A welcome email is an opportunity to show a new subscriber what to expect. Give the message one primary purpose and make the next action easy to find.
Introduce the sender and explain what the reader signed up for. If they requested a checklist, put the download link near the top and label it with the file’s purpose. Set expectations about future messages using the frequency you can actually maintain.
Send a test to yourself and open it on a phone. Check the subject, the link and the reply address. If your email service adds an unsubscribe link, confirm that it is visible and works as intended.