curl --location --request POST 'https://api.whatsiplus.com/sendMsg/APIKEY' \
--form 'phonenumber[]="+15551234567"' \
--form 'phonenumber[]="+15551234568"' \
--form 'message="This is a test messages"' \
--form 'schedule="1724160037"' \
--form 'link="https://example.com/image.jpg"'
{
"0": {
"phonenumber": "+15551234567",
"messageId": 566
},
"1": {
"phonenumber": "+15557654321",
"messageId": 567
},
"success": "true",
"messages": "Added to the message queue"
}