{
  "slug": "esignature-proves-the-mailbox",
  "title": "Your e-signature proves someone opened an email",
  "summary": "A certificate of completion proves a document reached a mailbox and someone clicked. It cannot prove which human. Here is what closes the attribution gap.",
  "lede": "Every e-signature platform can prove a document was delivered, opened and sealed, and none of them can prove who clicked. The law always put the weight on attribution, and a mailbox link was never able to carry it. This is what actually proves who signed, and what survives when the platform does not.",
  "date": "2026-09-08",
  "reading_time": "20 min read",
  "category": "Regulated",
  "tags": [
    "e-signature",
    "ESIGN Act",
    "UETA",
    "eIDAS",
    "document fraud",
    "attribution",
    "digital signature"
  ],
  "image": "https://cdn.twc.sh/images/igcache/Esignature%20Mailbox%20Proof/1200_630/blog.jpg",
  "url": "/blog/esignature-proves-the-mailbox.html",
  "wordcount": 4650,
  "related": [
    "session-theft-aitm",
    "blind-signing-wysiwys",
    "approve-by-email-and-emoji"
  ],
  "schema": "Article"
}