Comment by strnisa
4 years ago
The app will soon support the ability to back up the whole original email (in .eml format) before any changes are made, should the originals be needed for whatever reason.
4 years ago
The app will soon support the ability to back up the whole original email (in .eml format) before any changes are made, should the originals be needed for whatever reason.
Good luck explaining to a judge that the .eml backup you have on disk, with no chain of custody is just as good as the original.
I’ve actually never needed to present emails to a court. I assume the overwhelming majority of people could say the same.
If it keeps the original email then the DKIM signature from the sending domain will still be intact. As people have pointed out, it might be necessary to keep a copy of the public keys of all the senders in order to perform that validation.
Frustratingly, Exchange breaks this possibility immediately, because it decomposes the email into components. It does preserve and validate some fancier signature schemes, but those are rarely used and have their own problems.