I'm not seeing a rise. But more sophisticated software exists for it now compared to 10 years ago, that's true. Guessing emails is also common practice, but it

I'm not seeing a rise. But more sophisticated software exists for it now compared to 10 years ago, that's true. Guessing emails is also common practice, but it's also likely that you're on a lead list somewhere. And the original person curating that list probably got your email from another service, guessed it, or simply found it on your website provided in your HN profile. It's not going away any time soon - cold emails play an integral role in the sales funnel for the vast majority of online b2b services. It's easier to ignore it than to let it annoy you.