For the sender
Retain a checkable record of the message and protected files you sent.
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TRUST, WITH SOMETHING TO BACK IT UP
Turn “trust me” into “check it”
Was this really the message you sent? Has the file changed? WSD gives both sides evidence they can check, instead of relying on screenshots or recollection.
40 sec4 steps + the value
FOLLOW THE EXCHANGE1 of 5
01 Recipient
The proof travels with the message.
The recipient can download the message, protected attachments and verification materials together. The evidence is something they can keep.
Protection now. Evidence to retain for later.
02 Recipient
A sender they can verify.
After the local check, the recipient’s page identifies Helen at Greyfell and confirms that the sender identity, message integrity and protected attachments were verified.
The recorded sender is linked to the protected message.
03 Recipient
The actual files pass the check.
The engagement letter and its protected message file are marked as verified against the downloaded evidence. The recipient can see which files were checked.
A cryptographic check of content—not just a delivery notification.
04 Recipient
A clear answer to a difficult question.
WSD presents the result in plain language: sender confirmed, integrity confirmed, attachments confirmed and cryptographic evidence valid.
Keep the evidence. Recheck the protected files when it matters.
THE VALUE FOR BOTH SIDES
A shared basis for confidence.
The sender can retain the evidence. The recipient can check it independently. Both sides have a stronger answer when authenticity is questioned.
For the recipient
Check the recorded sender and detect changes to the protected content.
Retain evidence→Verify locally→Confirm integrity
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WHAT WSD BRINGS TOGETHER
The complexity stays underneath.
Doing this yourself means keeping signed records, file fingerprints, verification keys and the right verification tools together. WSD packages the evidence and provides the check.
Real Greyfell product captures, using a sample document and test recipients. Screens show selected areas of the actual workflow.
All six demos →