Add docstrings for _loggly_post() and _hipchat_post() methods.
Add docstrings for _send_message() method.
Move exception handling from respond_to_users...() method to _send_message().
Add message_flags to self._fetched_message dictionary.
Add option exclude user accounts matching a pattern.
Pass pattern of users accounts to ignore during processes into BoxEmailManager.respond_to_users_who_requested_password_reset_at_box().
Put imports into proper order. PEP8
Open email messages YAML file and pass into BoxEmailManager constructor.
About _send_message() method to sent the real email message to the real user.
Remove extraneous print statements. Add documentation.
Improve readability by removing unnecessar constants.  IT FELT LIKE THE SCRIPT WAS YELLING TOO MUCH.
Add parameter to respond_to_users_who_requested_password_reset_at_box() allowing caller to specify which email message to use.
Move logic for filtering emails based on receiving them from noreply@box.com up into _search_for_forgotten_password_messages_from_box()
Add KeyError exception handling to _send_message() for when a invalid email_message identifier is passed into the function.
Make BoxEmailManager._send_message() return True/False so that its success/failure can be used to trigger other events.
Remove unnecessary logic from _find_email_address.
Add documentation to _find_email_address() method and remove logging since that was too tightly coupled to BoxEmailManager's general program flow.  This method is also something that should be moved into a library.
Reorganize methods for greater clarity.  Keep bit of code that will execute in order closer to each other.
Removed code which checked the content_type header of the email message.  It appeared to not be required functionality.
Decouple _send_message() logic from BoxEmailManager logic.
Extract send_email_message_to_user() from respond_to_users_who_request_password_reset_at_box().
Rename respond_to_users_who_request_password_reset_at_box() -> process_password_reset_emails_from_box()
Add program summary log message.