We’ve just added support for the RingCentral SMS Gateway based in California, USA. RingCentral is a leading provider of global enterprise cloud communications, collaboration, and contact centre solutions. With the RingCentral SMS API you text any SMS-capable phone number in the world.
You can signup for a free trial account with RingCentral here and download a free trial version of fmSMS to test with RingCentral from here. We have a dedicated page on setting up fmSMS with the RingCentral SMS Gateway here.
Please get in touch if you have any questions about using fmSMS with RingCentral.