An adapter that sends email using the sendmail binary.

Example

# config/config.exs
config :sample, Sample.Mailer,
  adapter: Swoosh.Adapters.Sendmail,
  cmd_path: "/usr/bin/sendmail",
  cmd_args: "-N delay,failure,success",
  qmail: true # Default false

# lib/sample/mailer.ex
defmodule Sample.Mailer do
  use Swoosh.Mailer, otp_app: :sample
end