[bluena]

Would suggest to keep delegated access but use automated filters in Gmail so that those mails: - skip the inbox - are automatically marked as read - either deleted or place those mails in a separate and hidden folder

Painful memories should be avoided this way

[rahimnathwani]

This is not how delegated access works. It doesn't affect how your own inbox looks at all.

To switch to the delegated mailbox, you need to choose it from the account drop down on the top right.