For once. Get a domain and a paid mail account with fast mail/Zoho/gsuite. Slowly transition to the new inbox by moving over the emails. It will take sometime,

For once. Get a domain and a paid mail account with fast mail/Zoho/gsuite. Slowly transition to the new inbox by moving over the emails. It will take sometime, possibly months, and you might never be able to close the gmail inbox but it will be fine. You’ll never need to do such a transition in life again.