@icloud.com changed to @me.com without knowledge
how did my alias @icloud.com get changed to @me.com
My contacts using @icloud.com are no longer able to send email
how did my alias @icloud.com get changed to @me.com
My contacts using @icloud.com are no longer able to send email
they are identical.
"My contacts using @icloud.com are no longer able to send email" should not happen, the mail comes into the same mailbox.
See
https://support.apple.com/en-us/HT201342
Depending on when you started using iCloud, your iCloud email addresses or aliases might end with @icloud.com, @me.com, or @mac.com. No matter which address you send email from, you'll get all email sent to your @me.com, @mac.com, or @icloud.com email addresses in your iCloud inbox.
@icloud.com changed to @me.com without knowledge