[hadcomplained]

I registered several important accounts with @icloud.com email, because I was sure that I would never switch to Android besides the fact that the email looked cool (what a stupid reason in retrospect).

I deeply regret using the @icloud.com address for anything serious, because you would be unable to receive or send emails as soon as your iCloud storage subscription expires, provided that you use a larger quantity of data than is allowed in the free-tier iCloud. This is what actually happened to me a few weeks ago. I forgot updating my credit card number on the Apple account, thereby making it impossible to renew the iCloud storage subscription, resulting in the inbox full of emails "Your iCloud storage is full" -- these are what replaced the emails that have been sent to the @icloud.com address after the subscription expired. In addition, I did not receive these emails even after I renewed the subscription. To this day I do not know what these emails were about.