US Patent 10904186 Email processing for enhanced email privacy and security

In accordance with an example implementation of this disclosure, an email processor comprises mailbox management circuitry and replacement email message generation circuitry. The mailbox management circuitry is operable to configure an email message filtering rule for an email mailbox such that email messages that meet criteria specified in the email message filtering rule: bypass an inbox of the email mailbox, and are assigned a first metadata value specified in the email message filtering rule. The mailbox management circuitry is operable to fetch, from the email mailbox, an original email message to which the first metadata value has been assigned. The replacement email message generation circuitry is operable to generate a replacement message for the original email message.