In Delhi & Mumbai, you can send voice messages, and soon (hopefully) use the telephone to access e-mail. Through Indivoice. They have a long way to go, though, to get on par with Yahoo! by Phone.
Voice messaging
I highlight Indivoice’s launch of voice messaging and telephone-based email services in Delhi and Mumbai. While promising for the Indian market, I find the platform currently lacks the maturity and features of Yahoo! by Phone.