If I recall correctly, there's less a concern about Google than there are of malicious third-party data harvesters that gain full access to users inboxes by off

If I recall correctly, there's less a concern about Google than there are of malicious third-party data harvesters that gain full access to users inboxes by offering their service under the guise of being an email client. Edison Mail, Slice, and Rakuten are among the many offenders.