There are many organizations promoting successfully through SMS. This is because of many attributes most of them ultimately direct to high ROI of this promotion method, in comparison to promotion through Email, Push, or through different channels.
SMS marketing is specifically matched to organizations where buying done by clients are of quite diminutive value, of comparatively high occurrence, and are prone to inclination
I use SMS gateway service bsg.world/products/sms-gateway/ and send limitless messages to my potential clients coz 40% of all online purchases are made by the customers from their mobile phones while being on the go. This tool really works.
I suppose that the best is to choose an email marketing as a strategy but not an SMS. But even here troubles can happen. But they can be solved with an application I'll describe. For example, you need to convert EML to MSG, EML to PST or anything related to email, then this program can handle it.