Yahoo, Gmail, AOL and FastMail all have implemented DKIM for spam control when will Zoho do the same?

Yahoo, Gmail, AOL and FastMail all have implemented DKIM for spam control when will Zoho do the same?


As stated in  http://en.wikipedia.org/wiki/DomainKeys_Identified_Mail   DKIM is widely implemented and can form part of a spam control solution (it does for some pretty large mail providers).

I get too many emails through to my inbox that are clearly spam and I want Zoho to do / be better.