I am a new user of Rediffmail. Sorry to say this, but I do not like it. Frankly, it is no where near to call it a professional email. Though I do not like it, I will start by mentioning a good experience about it and then I will explain all the flaws it has.
Good: SMS can be sent to any mobile number.
Bad:
1) Messages which are expected to be in Inbox are often sent to junk. Its just disgusting.
2) Design is not attractive at all.
3) I does not work swiftly. It is just boring.
Guys, if you are already a rediff user, I have nothing to say. But if you want to be a new one, please do not try for this. I do not recommend it for new user on the basis of experience.