Apple can recover your keys also unless you enable ADP.

With MSFT cloud backup of keys is an opt-in. With Apple it’s an opt-out.

I will include iCloud in this because their email has nothing to do with ADP and is accessible by any agency that would ask.

Mailbox encryption is near pointless since at the least it needs to be encrypted at both ends not to mention relays.

For email each individual message should be encrypted if you want any confidentiality and even then the meta data is in the clear.

And this is because in order to send or receive an email the provider needs to access it. If they put it into a box later on to which they do not hold the key that is just security theater at that point.

Dude thats from 9 years ago.

A lot has changed since then and it is common knowledge that Apple regularly give government agencies access to their systems and hides it from the public until a whistleblower leaks it.

https://www.reuters.com/technology/cybersecurity/governments...

In a statement, Apple said that Wyden's letter gave them the opening they needed to share more details with the public about how governments monitored push notifications. "In this case, the federal government prohibited us from sharing any information," the company said in a statement. "Now that this method has become public we are updating our transparency reporting to detail these kinds of requests."