Works with the Booking Calendar plugin to send SMS notifications when somebody makes a booking, using the Clockwork API.
To send SMS you will need to sign up for a Clockwork SMS account and purchase some SMS credit. When you sign up you'll be given an API key.
Yes, separate each mobile number with a comma.
All mobile numbers should be entered in international format without a leading + symbol or international dialing prefix.
For example a UK number should be entered 447123456789, and a Republic of Ireland number would be entered 353870123456.