DestinationEx

One or more formatted phone numbers of the message recipients, separated by commas. The phone numbers must be formatted in the international format, beginning with a + and the Country Code, and without any leading 0.

For example, for a UK mobile phone number of 07836 123 456, it would be formatted as +447836123456.

Each number in this parameter has to be comma separated:
E.g. +4477845965452,+336456232125,+4479894561232

Destination phone numbers can include UK and international mobile phones, as well as UK landline numbers.