Running into SMTP error when trying to send email in RoR app

Question

I\'ve been desperately trying to send an email using the Action Mailer class in RoR, and even though the terminal shows that a message is being sent, it keeps returning with

Answer 1

This one solved the issue for me after some investigation:

Click https://www.google.com/settings/u/0/security/lesssecureapps

Enable access for less secure apps here by logging in with the email address you have provided in smtp configuration.