Having two gmail accounts on iPhone 4s?

I have a gmail account and another account which is via gmail but is not @gmail. So how can I add that to my iPhone 4s? It is @companyname.com instead of @gmail.com but the server is gmail.

Start by tapping Settings on the Home screen, and then tap Mail, Contacts, Calendars, and Add Account.

To set up an e-mail account that is not a default listed provider:

1. On the Add Account screen, tap the Other button.

2. Under Mail, tap Add Mail Account. Fill in the name, address, password, and description in the appropriate fields. Tap Next.

With any luck, that's all you'll have to do, although you may have to endure a spinning cursor for awhile as the iPhone attempts to retrieve information and validate your account with your provider. Otherwise, continue with Step 3.

3. Tap the button at the top of the screen that denotes the type of e-mail server this account uses: IMAP or POP

4. Fill in the Internet host name for your incoming mail server, which should look something like mail.providername.com.

5. Fill in your username and password.

6. Enter the Internet host name for your outgoing mail server, which should look something like smtp.providername.com.

You may have to scroll down to the bottom of the screen to see the outgoing mail server fields.

7. Enter your username and password in the appropriate fields.

8. Tap the Next button in the upper-right corner to create the account.

Some outgoing mail servers don't need your username and password. Still, fill them in anyway. That way, you won't have to add them later if your outgoing mail server does require an account name and password, which many do these days.