I have recently noticed an alarming trend all over my service providers.....they are erasing all data before 2020.....
My bank erased all transaction history before 2021, LinkedIn is releasing communication before 2020, I keep seeing notices from old accounts about no longer supporting their previous vows to offer lifetime storage.....emails are getting 'cleaned up', lots of things require MFA and2FA or the account gets closed....
They want all 'pre-pandemic' data removed....we are in the cleanup phase....it's not looking good. Buy the books and archive physical and digital!!
For email, get Mail Store Home. It'll backup most service providers and let's you keep it portable and you can export to other formats. It's also encrypted so it can't be scanned for violations if you keep a copy in the cloud.
Downside: Windows. I used to run it in wine, but it runs in a vm now.