IP Library Patent Application 19293337
Patent Application
App. No. 19/293,337

METHOD FOR SECURELY COMMUNICATING EMAIL CONTENT BETWEEN A SENDER AND A RECIPIENT

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Quick Facts
Patent No.
US None
App. No.
19/293,337
Abstract

One variation of a method for end-to-end encryption of electronic mail includes: receiving an email encrypted according to a first encryption protocol and designating a recipient within an external domain; verifying encryption protocol supported by the recipient's mail client; in response to a recipient exclusion database identifying the recipient, encrypting the email to a less-robust encryption protocol supported by the recipient mail client and transmitting the email to the recipient; in response to the recipient exclusion database excluding the recipient and the recipient mail client supporting the first encryption protocol, transmitting the email encrypted according to the first encryption protocol to the recipient; and, in response to the recipient exclusion database excluding the recipient and the recipient mail client not supporting the first encryption protocol, generating a notification email including a hyperlink to a secure webpage containing content of the email and transmitting the notification email to the recipient.

Claims (14)

1 . A method for end-to-end encryption of electronic mail comprising:

receiving a first email encrypted according to a first encryption protocol, the first email sent by a sender and designating a first recipient;

in response to a recipient exclusion list including the first recipient address and in response to a first set of encryption protocols supported by a first recipient mail client at the first recipient address including the first encryption protocol:

scanning the first email for sensitive information; and

in response to detection of sensitive information in the first email:

redacting sensitive information in the first email; and

inserting a first link to a first electronic document, containing sensitive information from the first email, into the first email; and

transmitting the first email-to the first recipient address.

2 . The method of claim 1 , further comprising:

receiving a second email encrypted according to a second encryption protocol, the second email sent by the sender and designating a second recipient address; and

in response to the recipient exclusion list excluding the second recipient address:

in response to a second set of encryption protocols supported by a second recipient mail client at the second recipient address excluding the second encryption protocol:

generating a notification email comprising a second link to a second electronic document containing content of the second email; and

transmitting the notification email to the second recipient address.

Assignments (2)
SECURITY INTEREST Recorded Mar 2, 2026
From: PAUBOX, INC.
To: WESTERN ALLIANCE BANK
Reel/Frame 073945/0047 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 9, 2025
From: GREEVY, HOALA
To: PAUBOX, INC.
Reel/Frame 072198/0566 →