{"version":"2.1.224","anchor":"tell-another-claude-session-something-and-hear-back-when-it-","canonical_anchor":"tell-another-claude-session-something-and-hear-back-when-it-","heading":"Tell another Claude session something and hear back when it was not delivered","tier":"notice","area":"Cross-Session Messaging","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.224\/e\/tell-another-claude-session-something-and-hear-back-when-it-","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.224","markdown":"### Tell another Claude session something and hear back when it was not delivered\n\nIf another session holds, denies or ignores your message, you now see a warning instead of silence.\n\n**What**\n\nWhen you send a message to another Claude session and the recipient holds, denies, or lets it expire, your session now prints a warning line and quietly tells the model not to sit waiting for a reply. Receipts arrive in batches of up to 200 per status and are de-duplicated per recipient address.\n\n**Details**\n\n- Two surfaces per receipt: a visible warning line, and a low-priority note injected into the conversation so the model stops blocking on an answer.\n- Covers held, denied and expired outcomes.\n\n**Evidence**\n\n`[Cross-session delivery notice]`\n\n- Area: Cross-Session Messaging\n- Tier: You'll notice\n- Useful: 4\/5\n- Signal: 3\/5"}