My Goto standard C# utilities dll
I have used this DLL in most of my own custom projects over the years.
I wrote these classes before .Net 3.0 came out. Some classes/functions I have never used, but some I have used all the time.
These are the ones I use all the time:
WebEmailClass2 - along with SimpleEmailVO
If you are looking to criticize then i really don't care - whatever floats your boat! It works for me and the hundreds of projects that I have used it in.