gmcorujo/newslatter — reverse-engineered prompt

Build me a simple newsletter web app in Python with Django. I want a clean page where visitors can type their email address and subscribe, with a friendly success message and basic validation so bad emails don’t get saved. If someone is already subscribed, tell them nicely instead of creating duplicates.

Please also make an admin area using Django’s normal admin so I can view subscribers, search them, see when they joined, and mark them active or inactive. Add a basic way for me to create a newsletter message and send it to active subscribers, even if the email setup is simple and documented with environment variables.

Keep the design simple but nice, make it easy to run locally, and include setup instructions in the README. Use sensible defaults, migrations, and a small amount of test data if helpful. Look up current Django docs online if you need to.