Mailtrap is awesome for development and testing, that provides a fake SMTP server for your development team to test, view and share emails sent from the pre-production environments and test with real data without the risk of spamming real customers.
What is Apache?
Apache is a wonderful application software. It is the most widely used web server application in the world with over 50% participation in the commercial web server market. Apache is the most widely used web server application on Unix operating systems, but can be used on almost any platform, including Windows, OS X, OS / 2, and so on.