Yah. Three years ago, When I was fresh out of school, I interviewed at a very popular startup. The interview went reasonably well, with the team lead asking me questions like when I would be able to join and so on. I had a great rapport with their HR guy too. It was kind of harsh to casually get a reject from a automated no reply email.
Two years later. The same guy, the lead of the team randomly emails me telling me I have a "great profile" and if I would like to grab coffee with him. I was amused to find out when I met him in person that he had no idea that I had come there previously. And all the assorted bullshit that went through. To be frank, I never seriously considered the offer the second time around. (I have a policy of never trying the fish if there is a cockroach running around in the floor of the restaurant. )
It is not fucking hard to send a personal email to someone who came all the way for face time with your company. In fact, it says a lot about your company's culture and attention to the little things.