That's why I recommend Fastmail, they have "auto-purge":
> Automatically delete messages after they have been in the folder for a certain amount of time, from 1 day to 1 year. Pinned messages are never deleted.
> Automatically delete messages after they have been in the folder for a certain amount of time, from 1 day to 1 year. Pinned messages are never deleted.
https://support.google.com/vault/answer/2535539?hl=en&ref_to...
https://docs.microsoft.com/en-us/microsoft-365/compliance/se...