brunojabs

 config.action_mailer.default_url_options = { :host => 'localhost:3000' }

  config.action_mailer.delivery_method = :smtp

  config.action_mailer.smtp_settings = {
    address: "smtp.gmail.com",
    port: 587,
    domain: 'gmail.com',
    authentication: "plain",
    enable_starttls_auto: true,

brunojabs

#!/usr/bin/env ruby
require 'digest/md5'
require 'uri'

# this is based on gravatar image API
# https://en.gravatar.com/site/implement/images/
# options :
# size : <integer> size of image
# default: <string> url of image if email not found or:
#  * 404