[Emc2fma]

So currently, we only support numbers within the US and Canada. While there are plans to expand to other countries, it isn't a priority at the moment.

For people living in other countries, we recommend that they purchase a US phone number (which can be done for as little as $1/month through something like iPlum).

And I'm assuming you mean through an app or something else?

[Philomath]

I guess creating an app for this might be too much trouble to make a customer stick to the service, it's kind of an entry barrier, but could it be possible to make it using WhatsApp's calls for example?

[Emc2fma]

Exactly - plus, daily notifications get blurred out in the users mind over time. Most people don't want to download yet another app as well.

WhatsApp unfortunately doesn't provide an API - otherwise, that would be a great idea.