which email is more powerfull, the yahoo's or the msn's?

Both are not perfect in speed, size and function.. Rediffmail I often use and comparitively its is very good.

Yahoo comes with great features i think yahoo is the best. Msn is also good but yahoo is great moreover i can access yahoo directly from my mobile.

Yahoo - I have recently started using Yahoo email as a backup to my preferred email and have been surprised at how efficient it is. I find it fast, very functional (especially with regard to virus checking attachments etc.) and easy to navigate. MSN/Hotmail - I stopped using quite a while ago. When I first began using the internet around 9 years ago, I used hotmail as everybody else seemed to, so I thought it must be the best. Though in the last couple of years they have greatly increased the "in-box" space allowance, in comparison to Yahoo and my preferred email client, I find it very slow to load and not very easy to navigate.