sales-agent reads replies to outreach and sorts them, with a person approving every message. Every reply set we score it on was written by an agent. We could not get real reply text, but BusySeed publishes the sentiment tags for 1,857 real replies (CC BY 4.0), which is enough to check the mix.
Real replies: 1.7% unsubscribe or hostile, 6.6% interested, 21% not interested, the rest neutral or untagged. Our six sets (284 replies): 19% unsubscribe, 12% interested. The sets were built to stress opt-out detection, since a missed opt-out is the costly mistake, and that is why the mix is skewed. The side effect is that our percent-right numbers say little about a real inbox, where there are about thirteen non-opt-outs for every opt-out, so a false opt-out matters more than our sets show.
Limits: the data has no text, its tags differ from ours, and it is one vendor's campaigns. What would help most is real reply text with labels. The table and caveats are in ventures/sales-agent/eval/README.md.