$ heroku config
=== website Config Vars
MYMAIL:   ....
PASSWORD: ....
USERNAME: ...@gmail.com

2016-10-21T15:23:07.567530+00:00 app[web.1]: 534 5.7.14  https://support.google.com/mail/answer/78754 l73df3sm1580914qke.26 - gsmtp
2016-10-21T15:23:07.567598+00:00 app[web.1]: Error occurred
2016-10-21T15:23:07.567632+00:00 app[web.1]: Invalid login: 534-5.7.14 <https://accounts.google.com/signin/continue?sarp=1&scc=1&plt=AKgczensbv_
2016-10-21T15:23:07.567633+00:00 app[web.1]: 534-5.7.14 LRmqLgckmKeB2t2XSrm7NtDocGfIlg6NVfy6KT8Y22BDI2Ymk7Rq2c5vvQpZNQ1123XY0dMRis
2016-10-21T15:23:07.567634+00:00 app[web.1]: 534-5.7.14 ee5mLqbEz7N7GRF1ijeDf9iqXU7fNGLusmfbxdVVhE1nWeHv682hcnDfZx3434No4xRM5Yky4i
2016-10-21T15:23:07.567634+00:00 app[web.1]: 534-5.7.14 75eqaR0_Zw1ps9ysMw2oRHH8g66wBUlJlJDjx16o07aHe0jSSVQIy_c111132d37RXTH5ryAq7VqR
2016-10-21T15:23:07.567635+00:00 app[web.1]: 534-5.7.14 MAKdvhJ6Ow0S7MXSOFnfweMKCZ-vJomc> Please log in via your web browser and
2016-10-21T15:23:07.567636+00:00 app[web.1]: 534-5.7.14 then try again.
2016-10-21T15:23:07.567637+00:00 app[web.1]: 534 5.7.14  https://support.google.com/mail/answer/78754 l73sm1580zxce3914qke.26 - gsmtp
2016-10-21T15:23:07.567636+00:00 app[web.1]: 534-5.7.14  Learn more at
2016-10-21T15:23:07.576480+00:00 app[web.1]: [2016-10-21 15:23:07] INFO: [hS1gQKhhtnI] Connection closed