[thrown-0825]

Great idea and good luck.

Before you open this up to the public you should prepare to be used as a potential spam vector and put some rate limits in place.

Assuming you are using something like twilio behind the scenes it can be very difficult to get yourself off a blacklist once you wind up on one.

[Animats]

Twilio will be a problem. Twilio no longer comprehends that there are non-advertising SMS applications. I used to use Twilio for something that just responded to incoming SMS messages. Then they changed their rules so that I had to register as an "ad campaign" and pay extra fees, even though I didn't do anything outbound.

[thrown-0825]

Yeah i have had similar issues with them.

[ranabasheer]

I agree, keeping the spam off the tool is the hardest part. I have put in place a whitelisting of phone numbers. But that will all be thwarted by a determined spammers.