title: Easiest way to send emails with Lumen 5.4 and Mailgun
body: <p>I've configured Lumen 5.4.6 to send emails with Mailgun. I saw several other answers but they were incomplete or had unnecessary statements or they were more complicated than needed.</p>
  
  <p>I put below complete and detailed steps to get Lumen to work with Mailgun as easy and clean as I've found.</p>
  
  <p>If you know an easier, cleaner, eleganter way, please add your answers and comments.</p>