awaisamjad-SE/mail_test_production1 ? reverse-engineered prompt

Build me a web app for email marketing called MailFlow, where I can upload or manage a list of contacts, write a campaign, and send emails through Gmail SMTP. I want it to send messages safely in the background so big sends do not freeze the app, and I want a clear dashboard that shows how many emails were sent and any failures or progress. Please include login and an admin area, secure storage for the SMTP app password, and a simple way to set up the sending account. Make it look polished and professional, with a clean marketing style front end and a working backend API. It should run locally for development and also be ready for Docker deployment with the database, Redis, and background worker already wired up. If you need to check current docs for anything, go ahead and look them up online.