What is sending you the most emails? What emails did you actually care about?
Yes yes, you can do this technically speaking, but good luck actually trying - everything is so slow and old emails with attachments will simply not download - they won’t load even in the UI sometimes
For me, I did what you did except with a new email address
That address has notifications and they are reserved pretty much for just people - I don’t use it for websites at all - I only give to people whose email id like to see right away