Intercepting Action Mailer Emails in Rails

Published over 5 years ago

---

Create an Interceptor Module

To intercept emails in specific environments such as development, testing, or staging, we need to write some logic to do so.

module MailInterceptor
  def self.delivering_email(message)
    # This will be the email that live emails will be sent to 
    message.to = ['your-email@mail.com']

    # Set the cc and bcc to be nil to avoid sending out real emails
    message.cc = nil
    message.bcc = nil

    # Change the from if you want a different from
    message.from = 'your-email@mail.com'

    # If you want to modify the subject, do so here
    message.subject = message.subject + 'Intercepted by XXXXXXX'
  end
end

Then in your initializers/action_mailer.rb, add the following snippet:

ActionMailer::Base.register_interceptor(MailInterceptor)

To limit per environment, use a guard clause on that same line.

Photo Credit: https://pixabay.com/illustrations/email-marketing-online-marketing-2362038/