You can access your Gmail account using a web browser or any email client app on your computer or iPhone. While you configure your Gmail account on your iPhone, it will make use of IMAP/POP and SMTP to transfer email messages. IMAP and POP are the incoming mail server protocols used by the email client app to receive your emails from the mail server, whereas SMTP is the outgoing mail server protocol used to send your emails from the email client.
Deleting Gmail account
If you want to delete your Gmail account from your iPhone, but still want to access it on your computer, you want to use the IMAP protocol. If you have configured the Gmail account using the POP protocol on the iPhone, remove it and reconfigure it using the IMAP protocol. To do How To Delete Gmail From Iphone And Keep It On My Computer, proceed with the quick steps provided below,
Removing/deleting your Gmail account
Adding your Gmail account using IMAP
Signing out your Gmail account
Removing your Gmail account from your iPhone will not delete the account. You can access it on your computer or any other device. To do this, carry out the simple instructions given here.