"I guess adding a delay would improve the bot's credibility by a lot!" And effectiveness in stealing spammers' time. If the bot immediately auto-responds to e

"I guess adding a delay would improve the bot's credibility by a lot!" And effectiveness in stealing spammers' time. If the bot immediately auto-responds to each subsequent (presumably human-initiated at this point) email, then the spammer may more easily follow the thread. On the other hand, if the bot waits 30-90 minutes, the spammer likely has gone on to other things. There's an additional (albeit minor) cognitive load here if they want to engage with a potential sucker.