Submit form to Text Message?

Seeing a bit of conversation on text messaging today.

What I would like to do is have my job coaches send our clients text message reminders about appointments or new job openings.

Ideally the contact cell number would come from a database and the staff would fill out a simple textarea and send the message to the client’s phone. Is this possible with Wappler or would I need a third party API? If so, which one?

My dashboard that I want to install this on is done with PHP.