Gmail – Set up a forwarding email account with Gmail for Business

Have you tried following the account deletion procedure?

To delete your Google Account, follow these steps:
1.Sign in on the Google Accounts homepage. (If you forgot your password, you can reset it).

2.Click Edit next to the "My products" list. If you don't see the Edit link, your account was likely created through an organization or company. To delete your account, talk to your domain administrator.

3.On the following page, click Close account and delete all services and info associated with it to delete your account.

4.Confirm your account deletion. To do so, you'll need to select these two options: "Yes, I want to delete my account," and "Yes, I acknowledge that I am still responsible for any charges incurred due to any pending financial transactions." (You can safely select the latter option if you haven't used any of Google's paid products, such as AdWords and Google Checkout, or if you have no pending financial transactions related to these products.)

So you want to be able to log in to your existing account, but be able to have emails to your company.com address show up there, and reply to those emails as if it's coming "from" your company.com address?

In that case, log in to your company.com account, go to Settings, and choose Forwarding/IMAP. Under Forwarding, choose Add a Forwarding Address and add your Gmail account.

Then, in your Gmail account, go to Settings, choose Accounts and Import, and under Send Mail As click "Add an email address you already own". Then enter your company.com email. Finally in the same section choose "Reply from the same address the message was sent to".

That said, if someone looks at the email header of mails sent this way, they will see it originated from your Gmail account and was sent "on behalf of" someone else. If that's not what you want, you'll have no choice but to switch over to the company.com account and use that "natively" instead. However in that case you can still import your old emails, filters, etc.