I remember how years ago, I had always kept my Gmail settings on full-paranoia lockdown mode, aside from the auto mailbox sorting feature. However, the first time I had to write an email from that account in a long while, Google's fucking suggested reply feature that uses all your email history showed up.

The fuck? I never gave permission for this shit.

After doing a deep-cleanse of all the settings on all my accounts again, I deleted all the emails after migrating them to Proton Mail, and keep Gmail accounts only to auto-forward and delete. Or to use the occasional bullshit Google form or document that needs a fucking Gmail login.