We've had a good experience with Clickatell, but only used them to send verification SMSs to our worldwide users. In the US, a Clickatell SMS will come from th

We've had a good experience with Clickatell, but only used them to send verification SMSs to our worldwide users. In the US, a Clickatell SMS will come from their shortcode, which is perfectly fine. No need to pay big bucks for your own shortcode, like some SMS providers want you to believe. If you need to receive SMS, it's a different story. You could get a UK number, which is much cheaper then a US shortcode, but might look weird to your US users.