Is it true that newsletters in HTML should have a “table-based” layouts?

Question

I read somewhere that when creating a HTML email, you should use the table-based layout. You should not care about creating tableless css based layout. Is that true? I have

Answer 1

You may want to look at this, although this is specifically about the Oulook html/css subset support described:

http://msdn.microsoft.com/en-us/library/aa338201.aspx