Google Apps is a service from Google that allow you to use several Google products such as Gmail, Google Calendar, Talk, Docs and Sites under your domain. Google offers this service in standard (free) and premium editions, and Google also offers a free version for education institutions.
Using Google Apps, you can host your domain’s email at Google mail server. All incoming and outgoing emails are stored at Google mail server so they can be accessed through Gmail under your domain.
Standard Edition offers 7GB email quota per user which is the same amount of storage as regular Gmail account. You can also add up to 50 user per domain. If you plan to use Google Apps with a large number of users, Premium Edition is a good choice, and of course you will be charged amount of money of using it. In this tutorial, i’ll use the Standard Edition of Google Apps which is free of charge and suitable for a small group or community.
Ok, before starting this tutorial, i assume you have met the following requirements:
Getting Started
1. Sign Up

Google Apps Standard Edition

Enter domain name

Sign up

Create administrator account
2. Domain Verification

Domain verification

Upload HTML

Google Apps Dashboard
3. Create Users
After setup completed, you can create user accounts so everyone on your domain will be able to log in, access Google applications, and have their own customized e-mail address.
To create new user:
4. Set Up Email Access
In order to access your email through Gmail, you need to change the Mail Exchange (MX) records on your domain’s host. In this tutorial, i’ll explain how to change MX records on Cpanel based domain hosting services. Google also provides extensive instructions on how to do this for many domain hosting company at a page when you open your Email application (before MX records update process done).
How to change MX records using Cpanel:

MX entry

Google MX entries

Add MX entry

MX list
It can take up to 48 hours for Google to verify your domain ownership, and to setup your e-mail once you change the mail records. Once you have completed all of the above steps, you will have activated your service and will be able to utilize Google Apps with your domain.
5. Email Access
To access Gmail application for your domain, use http://mail.google.com/a/yourdomain.com and log in with your username and password. You can add sub domain such as mail.yourdomain.com and redirect it to your Gmail address.
[...] This post was mentioned on Twitter by Posts Google, Lorensius Londa. Lorensius Londa said: How to Setup Google Apps for Managing Your Domain’s Email http://bit.ly/6ifM89 via @AddToAny [...]