A deleted-without-being-read notice can raise an evidence-preservation question. It does not prove who deleted a message, why, whether a person reviewed it elsewhere, or that a law was violated. Verify five layers. First: preserve the notice and message headers. Second: record the message ID, sender, recipient, and timestamps. Third: identify the mail system and disposition code. Fourth: compare server logs, mailbox rules, retention settings, backups, and case records. Fifth: document what can and cannot be concluded. Internet standards say a disposition notification reports a mail-system event; it is not guaranteed and may be generated by software. A missing or deletion notice is a lead, not a verdict. Preserve native files before screenshots or exports. Read the source-linked record at david-medeiros.com.