How does mailbox.org go from an email to a text document for hashing?

7474035 shared this question ago

Need Answer

I have gotten 3 emails from a sender, which apparently attempt to have digital signatures.

For the most recent of these, mailbox.org reports

"This Email was signed and verified."

, but for the two previous ones, mailbox.org reports

"This Email was signed and failed verification."

I notice that the failed-verification emails each had a Copy address,

whereas the signed-and-verified email did not have a Copy address,

so I am suspecting that the issue may be due to a difference between

how the sender went from emails to text documents

and

how mailbox.org goes from emails to text documents

(For example, it could be something as simple as,

using "CC" vs "Copy" for those other recipients.)

Do you know how mailbox.org goes from an email to a

text document, prior to hashing, for verifying a signature?

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