Actually, there is a way. To send data using HTTP create a BYOT device then follow this:
curl --request POST \
--url https://api.mydevices.com/things/THING_ID/data \
--header 'authorization: Basic base64(MQTT_USERNAME:MQTT_PASSWORD)' \
--header 'content-type: application/json' \
--data '[
{
"channel": 100,
"value": 27,
"type": "temp",
"unit": "c"
}
]'