Hi @Phong Vu,
I currently have a paid RIngCentral account (on Essential plan).
I also have a Free RingCentral Developer account to test creating integration with my software using RIngCentral API.
With this free developer account, I've been using a given sandbox phone number because I can't use my paid account with free developer account (is this right?).
Before I can commit to continue paying for RingCentral, I need to proof the concept of using RingCentral Webhook and see if my integration can receive SMS via the Webhook.
Can I try using the Free Developer account with either the given sandbox phone number, or my paid Essential real phone number to test Webhook integration?
If yes, what do I need to enable in these accounts?
Thank you so much for any quick input.