Replying to your notifications outperforms cold replies per action

The stat. The agent draws replies from several sources — its own notifications, target-account timelines, the home feed, and hashtag scans. Ranked by engagement-per-reply, the notifications source consistently came out on top, ahead of cold sources like hashtag scanning. This is the mechanism behind the headline 5x warm-vs-cold gap, seen from the supply side.

How it was measured. Each reply recorded which source surfaced the tweet. A multi-armed bandit (Thompson sampling) tracked each source's success rate — "success" = the reply's engagement score landing at or above the rolling median — and over time shifted reply volume toward the higher-yielding arms. Notifications repeatedly earned a higher success share than cold-discovery arms.

The honest caveat. This is one account's bandit history, and notifications are self-reinforcing: the more you reply to people who engage you, the more notifications you get from people inclined to engage you, which inflates the source's apparent quality. So it's a real effect and a feedback loop. It also doesn't scale infinitely — a small account has few notifications to work, so cold discovery is still necessary to prime the pump.

The tactic it implies. Build your daily routine as notifications-first: before you go hunting for tweets to reply to, clear the people who already interacted with you. It's the densest vein of warm targets you have. Cold discovery (hashtags, target lists) is for topping up once the warm well is dry — not the main event. Most growth advice has this backwards, telling you to grind cold replies while your warm queue sits untouched.