You might know the useful exception_notification gem. If you don't want to setup a postfix server just for sending your exception notification, and you don't want to use your private gmail account for this either, then this is for you: Send exception notifications with AWS SES:

ActionMailer::Base.delivery_method = :smtp
config.action_mailer.default_url_options = {host: 'yourdomain.com'}
config.action_mailer.smtp_settings = {
    address: "",
    user_name: 'AKIAJOUDABXGQM7GLIOQ',
    port: 25,
    password: 'AvbDo462TExfdpb2kpRrhpoAVbIxzwSeusW0DiQa3fO1',
    authentication: :login,
    address: 'email-smtp.us-east-1.amazonaws.com',
    domain: 'yourdomain.com',
    enable_starttls_auto: true
}

config.middleware.use ExceptionNotifier,
                    :email_prefix => '[YourApp] ',
                    :sender_address => '"notifier" <notifier@yourdomain.com>',
                    :exception_recipients => %w{you@gmail.com}

For this to work you must verify that the domain yourdomain.com and the email address you@gmail.com belongs to you. You can do this in the AWS SES console.