Ruby sending mail via gmail smtp

ruby email

If you're not using 2 Factor Authentication

Go to this link:

And select:

"Access for less secure apps"

as per:

In this case you would use your normal email and password to connect.

You need to create an app specific password for your application. Follow these steps:

Go to gmail
in the top right corner click on your profile icon and select 'My Account'
Click on 'Sign in & Security'
Scroll down the 'Sign in & Security' page a bit and there is a section called 'App Passwords' Click on that.
You should see a dropdown labelled 'Select App'. Select Mail.
For the 'on my device' dropdown select 'Other' and type in commandline or whatever you want to call the app.
Click 'Generate'. A password will be generated. Copy that password and replace the password you were using in your options hash with the generated password:
options = { :address => "smtp.gmail.com", :port => 587, :user_name => '', :password => '', :authentication => 'plain', :enable_starttls_auto => true }

That should be it. I just tried this and it worked for me.

Also make sure your username is your full gmail email address.