How to send confirmation e-mails using gmail smtp service for registration using devise under development mode locally?

Question

I have an app , it uses devise to send confirmation mails for the newly registered users , I have smtp settings under the development.rb file as

  config.action_mailer.default_url_options = { :host => 'http://localhost:3000' }
  config.action_mailer.raise_delivery_errors = true
  config.action_mailer.delivery_method = :smtp
  config.action_mailer.smtp_settings = {
  :enable_starttls_auto => true,
  :address => "smtp.gmail.com",
  :port => 587,
  :domain => "gmail.com",
  :authentication => :login,
  :user_name => "[email protected]",
  :password => "mygmail password"
    }

This is throwing me with an error like ,

Net::SMTPAuthenticationError in Devise::RegistrationsController#create

535-5.7.1 Please log in with your web browser and then try again. Learn more at

Any Ideas how to resolve this ?

Resolved using these settings ..

 config.action_mailer.default_url_options = { :host => 'localhost:3000' }
 config.action_mailer.perform_deliveries = true
 config.action_mailer.default :charset => "utf-8"
  ActionMailer::Base.smtp_settings = {
  :address              => "smtp.gmail.com",
  :port                 => 587,
  :user_name            => "[email protected]",
  :password             => 'my_gmail password',
  :authentication       => "plain",
  :enable_starttls_auto => true
  }

Answer 1

I was unuable to resolve this problem with any code. After a while i logged in to gmail account and this is, what it gave me after.

We've detected suspicious activity on your Google Account. Please create a new password to continue using your account.

Read some tips on creating a secure password. 

So solution to this problem is simply log into account you use for email sending and reconfirm your new password