Comment by knikes

My guess is that recruiters know not to spend their time trying to recruit someone who just started a new job. I suspect you'll start seeing those emails again in ~3-6 months (around the time when people who start a new job are deciding if they really want to stay with that company), and again in ~2 years (around the time when people decide to look for new opportunities). I'm not a recruiter, so take that with a grain of salt.