[iKnowKungFoo]

Dealing with this now, agree that if you're not generating revenue to cover the costs, you're barking up the wrong tree. Yes, SMS is easier for the users, but it's also not very secure. And that impacts the use cases of your platform.

At a previous employer, the solution was to move off SMS and onto internal messaging via native mobile apps. This will shift your cost focus, but that levels out as the volume of SMS transactions decrease.

[ShrigmaMale]

Yes I am generating enough revenue but I prefer to increase margins with some cheaper provider if I can. Long term you are probably right, a mobile app is much cheaper, just takes time.

[daveidol]

Does a mobile app alone solve this problem though?

My understanding is that fake users can still download an app (or call the API the app would have called), but a phone number is harder to continually spoof/generate.