Reverse order of email and response tuple

lib/bamboo/mailer.ex

@@ -97,8 +97,8 @@ defmodule Bamboo.Mailer do
   `deliver_later/1` if you want to send in the background.
 
   Pass in an argument of `response: true` if you need access to the response
-  from delivering the email. This returns a tuple of the response from calling
-  `deliver` with your adapter and the `Email` struct. This is useful if you need
+  from delivering the email. This returns a tuple of the `Email` struct and the
+  response from calling `deliver` with your adapter. This is useful if you need
   access to any data sent back from your email provider in the response.
 
       Email.welcome_email |> Mailer.deliver_now(response: true)
@@ -130,7 +130,7 @@ defmodule Bamboo.Mailer do
     else
       debug_sent(email, adapter)
       response = adapter.deliver(email, config)
-      {response, email}
+      {email, response}
     end
   end
 

test/lib/bamboo/mailer_test.exs

@@ -265,13 +265,13 @@ defmodule Bamboo.MailerTest do
     end
 
     @tag adapter: ResponseAdapter
-    test "deliver_now/2 returns response and email when passing in response: true option" do
+    test "deliver_now/2 returns email and response when passing in response: true option" do
       email = new_email(to: "foo@bar.com")
 
-      {response, email} = Mailer.deliver_now(email, response: true)
+      {email, response} = Mailer.deliver_now(email, response: true)
 
-      assert %{body: _, headers: _, status_code: _} = response
       assert %Email{} = email
+      assert %{body: _, headers: _, status_code: _} = response
     end
 
     @tag adapter: ResponseAdapter