 
   ## Examples
 
-        iex> %Swoosh.Email{} |> cc("steve@rogers.com")
-        %Swoosh.Email{assigns: %{}, attachments: nil, bcc: [],
-         cc: [{"", "steve@rogers.com"}], from: nil, headers: %{}, html_body: nil,
-         private: %{}, provider_options: %{}, reply_to: nil, subject: "",
-         text_body: nil, to: []}
+      iex> %Swoosh.Email{} |> cc("steve@rogers.com")
+      %Swoosh.Email{assigns: %{}, attachments: nil, bcc: [],
+       cc: [{"", "steve@rogers.com"}], from: nil, headers: %{}, html_body: nil,
+       private: %{}, provider_options: %{}, reply_to: nil, subject: "",
+       text_body: nil, to: []}
   """
   def cc(%__MODULE__{cc: cc} = email, recipients) when is_list(recipients) do
     recipients =


  ## Examples

        iex> %Swoosh.Email{} |> reply_to({"Steve Rogers", "steve@rogers.com"})
        %Swoosh.Email{assigns: %{}, attachments: nil, bcc: [], cc: [], from: nil,
         headers: %{}, html_body: nil, private: %{}, provider_options: %{},
         reply_to: {"Steve Rogers", "steve@rogers.com"}, subject: "", text_body: nil, to: []}

        iex> %Swoosh.Email{} |> reply_to("steve@rogers.com")
        %Swoosh.Email{assigns: %{}, attachments: nil, bcc: [], cc: [], from: nil,
         headers: %{}, html_body: nil, private: %{}, provider_options: %{},
         reply_to: {"", "steve@rogers.com"}, subject: "", text_body: nil, to: []}
  """
  def reply_to(%__MODULE__{} = email, reply_to) do
    reply_to = format_recipient(reply_to)

  The recipient must be; a tuple specifying the name and address of the recipient; a string specifying the
  address of the recipient; or an array comprised of a combination of either.

      iex> %Swoosh.Email{} |> bcc("steve@rogers.com")
      %Swoosh.Email{assigns: %{}, attachments: nil, bcc: [{"", "steve@rogers.com"}],
       cc: [], from: nil, headers: %{}, html_body: nil,
       private: %{}, provider_options: %{}, reply_to: nil, subject: "",
       text_body: nil, to: []}
  """
  def bcc(%__MODULE__{bcc: bcc} = email, recipients) when is_list(recipients) do
    recipients =
