Such a clever idea. I think the best way to approach this is not fully abandoning email but using filters to auto-forward specific types of emails into their correct destination in Notion (e.g. invoices go to your Notion invoices database, bug reports can go into your Notion bugs database, etc).
Divinate
Divinate
HelloDeco
Divinate
meetheverse
Divinate
The Notion Tools Hub
Divinate