Is it possible to run your own e-mail hosting service?

I've got my own domain and stuff, but how do I run a public e-mail service, such as Hotmail, or G-Mail?



Is there a script for such a thing?Is it possible to run your own e-mail hosting service?
Sure. You need to start making an web application. To see all the legal aspects for security. Then get people to trust you and subscribe. The problem is when you get sued because peoples accounts are not secure, etc. There are some forum applications like phpBB that have integrated mail or you can build your own.Is it possible to run your own e-mail hosting service?
U need a Web domain and Web Hosting. Then you need scripts etc. But never think people will use them because of google and yahooIs it possible to run your own e-mail hosting service?
If you don't know how to do it, then I wouldn't recommend planning to do it for a living...