I came across this service and decided to test it — the speed is just excellent. I'm including it in my program, but unfortunately, nothing works, so I'm writing to support. In response, I found out that they have the IMAP port blocked for receiving emails. I was surprised that among all the residential proxy services, only they have this issue. I contacted technical support, but they told me that this is my problem and that I need to resolve the email receiving issue on my own.