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Some breakups sit in your phone drafts for weeks — written, rewritten, never sent. Behalf is an AI agent that delivers them via iMessage on your behalf — openly as AI, never impersonating you, with details only the two of you would recognize so they know the message is real.
After sending, the agent stays for up to 72 hours of reply, holding the line on the ending you chose: clean cut, soft close, or protected exit. If the recipient signals crisis, the conversation halts immediately and routes them to support.