Ty! Yeah, i registered with tuta and started to move Things there. Until i came to the "how do i Back Up old E-Mails from selected folders when the storage gets full again" question - i tried their Export solution and it can only Export all Mails, Not folders specific ones, and dumps them with No reference or information to their sorted folders onto your Disk. So i will try with another Provider, who supports IMAP so i can use regular Thunderbird/betterbird as Mail client, where i can do exactly that.