I had the same issue recently. All major carriers have some basic checks in place which blocks the SMS from getting delivered if you use short links (e.g.abc.gl/1432). The SMS will get delivered as long as you have a .com in the URL (e.g. abc.gl.com/1432)
ngrok uses xxxx.ngrok.io links so that might be why they don't get past the validation checks.
//off-topic
I recently discovered ngrok to test a .Net Core backend project that uses the Fitbit API and I needed to test publish/subscribe callbacks coming back as new activity data was tracked.... In ❤️love ever since
I recently discovered ngrok to test a .Net Core backend project that uses the Fitbit API and I needed to test publish/subscribe callbacks coming back as new activity data was tracked.... In ❤️love ever since
Yup, perfect ngrok use case.
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TL;DR
ngrok uses xxxx.ngrok.io links so that might be why they don't get past the validation checks of T-Mobile and Verizon.
FULL EXPLANATION
So weird 🤔. Only thing I could think of is that they do this for security reasons.
But their rules seem outdated..
I found this on SO: stackoverflow.com/questions/223829...
They discuss that only .com and .org seem to be able to get through T-Mobile and Verizon's SMS service. Others (like short links) get blocked.
As I'm thinking about it more and more, this might be to prevent people from getting spammed or click on links with unknown destinations...
The accepted answer in that SO link (stackoverflow.com/a/42381616) says:
I had the same issue recently. All major carriers have some basic checks in place which blocks the SMS from getting delivered if you use short links (e.g.abc.gl/1432). The SMS will get delivered as long as you have a .com in the URL (e.g. abc.gl.com/1432)
ngrok uses xxxx.ngrok.io links so that might be why they don't get past the validation checks.
//off-topic
I recently discovered ngrok to test a .Net Core backend project that uses the Fitbit API and I needed to test publish/subscribe callbacks coming back as new activity data was tracked.... In ❤️love ever since
Yup, perfect ngrok use case.