Nostr Plebs is an easy way of getting a NIP-05 identifier and support for related Nostr services.
"All Nostr Plebs users can now receive emails sent directly to their Nostr address."
"Emails will be delivered via Direct Messages sent from the @Nostr Plebs Email bot. This is currently live for all of our domains."
"Example: if you registered the Nostr address firstname.lastname@example.org, you can now receive emails sent to email@example.com!
"Please note that you cannot REPLY to DMs to respond to any email that you received at this time."
As clarified in the comments, "the emails received by @Nostr Plebs Email bot are not encrypted similar to every hosted email service except for messages which the SENDER actively end to end encrypts with PGP/GPG."