SMS from web application [closed]

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I don’t know if this applies to you, but what I have done many times to save myself the money is ask the user in his profile what his carrier is, then tried matching it with this list. Essentially, many/most carriers have an email address connected to a phone number that will easily let you send texts to the number. For example, if you have ATT and your phone number is 786-262-8344, an email to [email protected] will send you a text message with the subject/body of the email, free of charge. This technique will pretty much cover all of your US users for free. Obviously, depending on the needs of your application this may not be possible/adequate/desired, but it is an option to be aware of.

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