You are probably joking.
> hushmail.com
"Hushmail supplied cleartext copies of private email messages associated with several addresses at the request of law enforcement agencies under a Mutual Legal Assistance Treaty with the United States.; e.g. in the case of U.S. v. Tyler Stumbo. In addition, the contents of emails between Hushmail addresses were analyzed, and 12 CDs were supplied to U.S. authorities."
https://en.wikipedia.org/wiki/Hushmail#Compromises_to_email_...
> lavabit.com
"The court records show that the FBI sought Lavabit's Transport Layer Security (TLS/SSL) private key. Levison objected, saying that the key would allow the government to access communications by all 400,000 customers of Lavabit. He also offered to add code to his servers that would provide the information required just for the target of the order. The court rejected this offer because it would require the government to trust Levison and stated that just because the government could access all customers' communication did not mean they would be legally permitted to do so. Lavabit was ordered to provide the SSL key in machine readable format."
https://en.wikipedia.org/wiki/Lavabit#Suspension_and_gag_ord...
> protonmail.com