posteo.de is an example of a company offering an email account with some storage for 1 euro a month on Roundcube webmail or IMAP/POP3. Not a customer, nor anyth

posteo.de is an example of a company offering an email account with some storage for 1 euro a month on Roundcube webmail or IMAP/POP3. Not a customer, nor anything to do with them, but I do keep this in mind in case my current ISP gets taken over or goes under. Once there is a credit card registered and all it is easy to upsell ( more storage and more aliases &c). I wonder if they make any money on the 1 euro accounts given the tendency of most people to not use the max resources?