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Hashing/Email encryption

     
7:07 am on Sep 23, 2016 (gmt 0)

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I have a request to be able to encrypt emails so the sender cannot decipher who the receiver is. Can we do this?

If not, can you please suggest alternative solutions?

In the words…

"can we have Hash emails so that we don’t see email addresses but we can email people?
How can we publish a list of emails that is all garbled so no one without the (complex) key can decipher it?
I want the email addresses to not be decipherable by humans
some mechanism on our end to garble the emails so no one but them can see it and us on the end but with a key (or better a computer with the key)
we have a list of very confidential emails
many people are generating that list
these emails cannot be discovered and are highly sensitive
how do we garble/encrypt these emails at the source and allow out computer system to use these encrypted emails?"

Best regards,
Gowri
8:56 am on Sept 23, 2016 (gmt 0)

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E-mail encryption only works on the body and attachments. You can't deliver mail with an encrypted address. Without the header information you can't send or receive the mail.

I'm not exactly clear what you're asking for here though.
9:32 am on Sept 23, 2016 (gmt 0)

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Thanks for you reply! can we encrypt email addresses with some key, so that we will be able to decrypt with the key generated while encrypting?

For EX: I send a list of encrypted email addresses with some unique keys (which are very confidential) from one country, Receiver from different country will decrypt all the email addresses with unique keys generated for each email address while encrypting.
7:59 pm on Sept 23, 2016 (gmt 0)

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Read the email internet spec. Email headers are done in plain text. No header encryption (From:) is possible less you risk the emails being rejected by the recipient (final routing) server. Unreadable or blank From: fields are NOT acceptable to many servers.

It's how email has worked since the changeover from X.400. Create a secure domain to send from that the registration info is privacy encrypted (by obfuscation). Then create your list there. The senders will see only that address but not those on the list. That's as close as you can get.
8:31 pm on Sept 23, 2016 (gmt 0)

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You can use mailinglist software to hide the receivers. So the sender just send an email to mailinglist@example.com and never sees the receivers.