# SMTP_SETTINGS = {
#   address: ENV.fetch("SMTP_ADDRESS"), # example: "smtp.sendgrid.net"
#   authentication: :plain,
#   domain: ENV.fetch("SMTP_DOMAIN"), # example: "this-app.com"
#   enable_starttls_auto: true,
#   password: ENV.fetch("SMTP_PASSWORD"),
#   port: "587",
#   user_name: ENV.fetch("SMTP_USERNAME")
# }
