Rediffmail ( from rediff.com) is the fastest email service provider I have so far experienced, whereas I m having email account with all the major / popular email service provider websites. with rediffmail it is different you just click and you are in .. just click send and your mail is gone .. just click inbox and there it is .. even downloading the attachments are very fast. they give 5 mb space with each email id and it is all for free. beside this rediff.com is providing services like chat, bol, shopping and search the web etc. overall a good site for email services.
I recommend everyone to use rediff mail service.