Not sure if this is the case for you all or not, but several years ago I was consulting for a company who was having serious support issues similar to this where random customers swore they were sending support requests via email, yet the company wasn't receiving them. Because it was working properly for some and not others we didn't think it was an issue on the company side of things. In the end though it was overly strict spam filter setting was just junking emails randomly. I bring this up because there does seem to be a common trend occurring lately where people are saying they sent emails and you all are saying you didn't receive or are not seeing them.

Not to knock on you, but I'm starting to see this is a trend. I was on the hn irc channel, and numerous people complained about the same thing. That you're always very willing and ready to offer support here on HN by saying "Sure, just email me!" but when these folks do email you, they are ignored. I don't know if this is a clever PR strategy to contain and direct fallout to a private medium so it never sees light of day, or if it was a genuine mistake.

I think and hope it was the latter, but the frequency with which this seems to be happening starts to suggest it may also be a little bit of the former. E.g., just in this very comment thread there's a handful of people claiming you never responded to emails even after explicitly asking them to email you.

I've re-sent it. I have DKIM and SPF set up for my domain so if my emails are actually being dropped you must have a very aggressive spam filter!