Who are the best SMS API providers in USA area, enabling website publishers to send auto sms via an APP?

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I would recommend my company, Waterfall Mobile. We provide API services for a number of leading brands, agencies and technology companies such as Constant Contact, The US Army and Yum Brands. Happy to provide more information if needed. You also going to find a list of providers at the Mobile Marketing Association's industry directory, http://mobilemarketingindustrydirectory.com/. Good luck.

Check out the API. You can easily integrate the auto SMS notification into your web form at 0.65 cents per message in the U.S. Pricing: http://plivo.com/pricing/ Documentation: http://plivo.com/docs/api/message/ Tutorial: https://plivo.com/docs/getting-started/sms-app/ Contact: http://plivo.com/contact/sales

I can also recommend my company,Hypermedia Systems, for an different approach: using SMS hardware. You can watch the video I uploaded in the post: .

You can use your Android phone with unlimited texting plan and enable it to send SMS via MightyText WebApp. Not sure if this suffices your requirement though. Else, you can check out Twilio.

There are a number of options out there.  I'm biased, as I work for the company, but I'd recommend you consider http://www.message-media.com.  We offer developer-friendly APIs that can easily handle what you're describing.  We pride ourselves on best-in-class reliability (we have a fully redundant infrastructure) and support (we offer live, phone-based support at no extra charge).

If, you have a cheap text plan and an Android phone than you can use our app (http://bit.ly/msg99) to run a small gateway of your own on your mobile with all API support.

I would say you should check out http://docs.tyntec.com. They’re on the telecom level and work with a lot of sms api providers. From my experience working with them, I know they have their own REST API. They also have great rates, because they take a wholesale approach.

There are a lot of providers, but you need to consider the following: How long they have been in the industry, as they are a lot of new companies promising HIGH throughput ,etc Do they have excellent API platform, providing Restful, jason, etc Do they provide both Short and Long code support Are they compliant with the http://www.ctia.org/ and MMA - this will guarantee that your campaign will be successful. These are some good providers: https://www.twilio.com/ - TWILIO - you will need a developer to fully develop your system. The platform is great if you do a lot of US texting (they also provide API for voice) https://www.nexmo.com/ - NEXMO - they have coverage in more countries, and are great for international messaging. https://www.protexting.com/ - PROTEXTING - they have great platform, and integration is easier. You can plug in both Short Codes and Long Number (including international. Protexting has a lot of features.