Based on Bamboo.TestAdapter, this module can be used for testing email delivery.

The deliver/2 function will provide a response that follow the format of a SMTP server raw response.

No emails are sent, instead it sends back {%Bamboo.Email{...}, {:ok,"<raw_smtp_response>"}} for success and raise an exception on error.

Example config

# Typically done in config/test.exs
config :my_app, MyApp.Mailer,
  adapter: BambooSMTP.TestAdapter

# Define a Mailer. Typically in lib/my_app/mailer.ex
defmodule MyApp.Mailer do
  use Bamboo.Mailer, otp_app: :my_app
end