One email used 2017-2019 has the format: "We thought you might like to know that we put [HN link] in the second-chance pool, so it will get a random placement

One email used 2017-2019 has the format: "We thought you might like to know that we put [HN link] in the second-chance pool, so it will get a random placement on the front page sometime in the next 24 hours." Another I got a few times in 2015 starts: "[link] looks good, but didn't get much attention. Would you care to repost it? You can do so here: [link]." Former might be a newer version of the latter, going by email dates.