TO address hidden in spammer email - Why?

[humptydumpty]

The mail was intended for another mailbox on the same Cloudron mail server that forwards to one main mailbox. I can see the original TO address if I inspect the headers. Is this why the TO doesn't show up, or can spammers send the mail in a way to hide the TO address?

[girish]

@humptydumpty Interesting... I would quickly check in another mail client if the To Address shows up. Maybe it's a roundcube bug?

[humptydumpty]

I deleted the email after taking the screenshot, and now I can't find it anywhere. It's not the in the junk, deleted messages, trash, or spam folders. I'll have to wait until they email me again. Nothing is more reliable than spam delivery

I found another email in the spam folder supposedly from Contabo (it's NOT) but the To/From are hidden in Roundcube. In Snappymail, you can see it all (from, to, name..).

[girish]

@humptydumpty yeah, I suspect it's roundcube hiding the To address for some reason. Maybe worth reporting upstream with the full email headers.