Answer
Deleting an Email Account from the iPhone Doesn’t Remove It. When you delete an email account from an iPhone, the account and address are not deleted. You may still receive and send emails using web or other email programs that have been configured to use the account.
How To Delete Email Accounts On The iPhone or iPad
How To Delete Email Accounts (for Android)
To delete an account, tap Settings and then Mail. Select Delete Account from the drop-down menu next to the problematic account. Return to the main Mail settings screen and add a new account by tapping Add Account again.
You won’t lose any of your previously downloaded email if you delete an account. Any mail filtering regulations you’ve established, on the other hand, may be lost. You should back up your rules and export them so that they may be re-imported if required.
When you remove an account, everything connected with it from your phone is also deleted. Email, contacts, and settings are all affected by this.
What happens if you shut off your Gmail account. All of your emails and settings will be erased. You won’t be able to send or receive email using your Gmail address anymore. If you change your mind, you may be able to retrieve it
The server sends “NEW EMAIL” to each device if your email program and mobile device are configured to use POP3. So, when you delete an email on your desktop computer, it will still be on your phone. And vice versa is true as well.
Deletion of a Gmail account is irreversible. Following the procedure, your emails and account settings will be deleted. You will no longer be able to use your Gmail address to send or receive emails, and it will not be available for others to utilize in the future.