I cannot answer for sure, but I would assume so. When I originally joined, I checked the option to send an email whenever a topic I responded to had a new reply. I unchecked that option well over a year ago, but I still get the occasional email from some old topic that got revived.
That being said, just because they get a message doesn't mean they'll open it or reply; I have a PM sitting in my outbox that's over two years old.
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"Nothing worth having is easy."
Three years!