[lukeasch21]

Those look like interesting options, and they're surely be more reliable than relying on the phone's own SMS capabilities, but I wasn't able to find a public API for any of those services. As far as SMS rate limiting goes, I agree that multiple numbers would be good. Perhaps if there's a demand for it, I can create a feature that switches numbers from the database on the fly as it notices some are hung up.

>FYI most carriers consider Person to Person messaging to be below 1 message per minute and run between 40% inbound to 60% inbound messages.

Yep, I've read into that a little. I wasn't able to find anything explicitly forbidding a service like this in their terms, although there's a lot of legal documents that carriers have so I could have missed it. I read that you should expect about 1 SMS/second on consumer carriers, but it seems like I'm able to get about 2-3 SMS/second in my testing.

I didn't know about carriers having an unlimited SMS threshold... I'll have to look into that, thanks for the heads up!

[posguy]

Yeah, neither WebDigits nor other carrier offered services seem to offer a public API, it would be a matter of reverse engineering their website :c