When you add your Google account to your iPhone or iPad in the Settings app, you’re adding your Gmail account to the Mail app. If you prefer to use third-party email clients, you can remove email accounts from the Mail app on your iPhone or iPad.
Using the Settings app, you can sign out of any email account (including Gmail, Outlook, and iCloud), while still continuing to use the account for syncing notes, contacts, and so on.
To do this, open the “Settings” app on your iPhone or iPad and go to the “Passwords & Accounts” section.
Here, you’ll see all of the accounts that you are logged in to. Tap on an account to see its fine details.
Next, tap on the toggle next to the “Mail” option to disable email syncing. You’ll notice that the particular email inbox will disappear from the Mail app.
You can go back to the “Passwords & Accounts ” section and follow the same process for removing the email accounts from other services.
The process for disconnecting email accounts from the Mail app works for all third-party accounts. If you want to remove the iCloud email account, the steps are slightly different.
Open the “Settings” app and tap on your Apple profile found at the top of the menu.
Here, tap on the “iCloud” option.
Now, scroll down and tap on the toggle next to the “Mail” option.
Your iCloud email has now been disabled and will no longer appear in the Apple Mail app.
To confirm, you can open the “Mail” app again. Instead of seeing your usual email inbox, you’ll see a welcome screen asking you to log in to an account.