hello
your answer is very useful for me.
thank you so much
lina
I have found these steps on Google's Account Help. I hope it helps, Good Luck! :)
You can delete Gmail from your Google Account at any time. If you're sure you won't use Gmail in the future, please follow these steps to delete it:
1. Sign in to your Gmail account.
2. Click Settings at the top of any Gmail page.
3. Click Accounts in the Settings menu bar.
4. Click Google Account settings.
5. Click the Edit link next to 'My products.'
6. Click Delete Gmail Service and fill in the required fields.