Is there any C# API for this task? Any suggestions?
I've used /n Software in the past with success. Not free, but hey, you get to blame someone else if it doesn't work! (in other words, you get tech support from the company)
They have a free trial as well.
来源：https://stackoverflow.com/questions/808871/how-to-grab-attachment-programmatically-c-from-a-pop3-mail