 
   @doc """
   Add a property to the list of dynamic template data in the SendGrid template.
+
   This will be added to the request as:
 
   ```

  end

  @doc """
  Add SendGrid personalizations

  Each personalization can have the following fields: `to`, `cc`, `bcc`,
  `subject`, `headers`, `substitutions`, `custom_args`, or `send_at`.

  end

  @doc """
  Instruct SendGrid to bypass list management for this email.

  If enabled, SendGrid will ignore any email supression (such as
  unsubscriptions, bounces, spam filters) for this email. This is useful for
  emails that all users must receive, such as Terms of Service updates, or
  password resets.
