Gmailer not connecting go gmail account

Rails
1

hi all i have installed gmailer gem and when trying to connect with my
gmail account using it im getting the error “RuntimeError (Not
connected, verify the credentials.)”.

Code i used are as follows:

require 'rubygems'
require 'gmailer'

GMailer.connect("[email protected]","password") do |g|

    g.send(

  :to => "[email protected]",

  :subject => "Mail from application",

  :body => "mail from application"

)

end