There are many websites out there on the web which let us send free unlimited SMS to India. All of those sites require you to first register before sending any SMS. But there are few websites which require no registration, i.e. you can directly send SMS after visiting the site.
The sites listed below requires no registration, lets you send unlimited FREE SMS to India, and some even support large 500 character SMS -
1. BollywoodMotion – No login or registration required. Send unlimited 500 character SMS. Check message delivery report in real-time. No Ads. High speed message deliver system. The most impressive part is the 500 characters limit, which no other online SMS sender provides and that too with unlimited SMS.
2. SMSti.in – Same features as above. The only difference is the lower SMS characters limit. It supports only 160 characters SMS.
3. FooSMS – Same features as supported by both the sites above. It further lowers the SMS characters limit, i.e. supports only 140 character SMS. The remaining 20 characters are reserved for advertisements. Interesting thing is that this site does not even require uses to fill captcha. That makes it the quickest among all.
Note: Numbers registered with Do Not Disturb Registry (DND) may not receive SMS sent via any of the above sites.
The major drawback of these service is that the identity of the sender can not be verified which is a big loophole. Thus it is a compromise with the security standards since this service can be easily misused by some anti-social elements.