Is it possible to turn off ActionMailer emails when cucumber testing is happening on development?

Currently, my local development environment is setup to be able to send out actual emails. Because of this, deliveries are being made, and nothing is kept in the `ActionMailer::Base.deliveries` table. Is it possible to disable email sending in cucumber tests? If so, what is the syntax to do this? Or is there a better way to test emails being sent? authentication_steps.rb: ``` Then /^I should receive a confirmation email$/ do email = ActionMailer::Base.deliveries.last email.subject.should == "Welcome to our website!" end ``` app/config/development.rb ``` ... # Don't care if the mailer can't send config.action_mailer.raise_delivery_errors = true config.action_mailer.perform_deliveries = true # Setup for local testing of emails using gmail test account config.action_mailer.delivery_method = :smtp config.action_mailer.smtp_settings = { :address => 'smtp.sendgrid.net', :port => 587, :domain => ENV['MAIL_DOMAIN'], :authentication => 'plain', :enable_starttls_auto => true, :user_name => ENV['MAIL_USERNAME'], :password => ENV['MAIL_PASSWORD'] } ... ``` Thanks