title: ActionMailer not sending mail in development using Spree
body: <p>I'm using Spree to develop an E-commerce. I was using part <a href="https://launchschool.com/blog/handling-emails-in-rails" rel="nofollow noreferrer">this</a> tutorial to send emails using ActionMailer, but I can't make it work. </p>
  
  <p><strong>My controller</strong></p>
  
  <pre><code> UserMailer.sign_up_confirmation(spree_current_user).deliver
  </code></pre>
  
  <p><strong>My develpment.rb</strong></p>
  
  <pre><code>ActionMailer::Base.perform_deliveries = true
    ActionMailer::Base.delivery_method = :smtp
    ActionMailer::Base.smtp_settings = {
        address: 'smtp.gmail.com',
        port: 587,
        user_name: ENV['gmail_username'],
        password: ENV['gmail_password'],
        authentication: 'plain',
        enable_starttls_auto: true
    }
  </code></pre>
  
  <p>There is no error in the console and the mail it seems to be delivered right, but there is no email on my gmail account. I used this code in a previous project and worked fine. So, is Spree doing something to my email delivering?</p>