Mass update a contact field using Email lookup

Hi, i have installed SuiteCRM in Google cloud few days back. Please help me with the below issue.

How should i mass update contact’s fields using excel import by matching the Email field?

I’m using external email software for my email campaigns. so i export the bounce and unsubscribe contacts from the tool and need to update those contact’s fields in Suitecrm with the respective status. How do i do that? When i select "Create new records and update existing records " fields while importing it is removing the contacts with the “Email field” matched.