With 99.99% uptime and 24/7 customer service, the Mailgun mass email automation tool lets you add your domain and DNS to send and forward emails. The spam filter doesn’t remove all spam, however and logs are removed after 30 days, so keep copies for reference purposes. However, these seem to be the only negative points. You can send up to 10,000 free emails every month, and the first 100 validations are also free of charge. The tool is easy to use and has a great reporting system. Perfect for communicating with the masses.