Six months to a year later. According to relevant public information, most recruitment companies will not return the resumes of unsuccessful job seekers, but destroy them after six months to one year. When HR gets the job demand, it will check the resume in the mailbox in time, and when it finds the favorite candidate, it will not continue to look at the resume behind. So emails that have not been checked for more than four hours usually encounter two situations: HR found the right person in the latest email. The email has passed before it enters HR's eyes.