curl --location --request GET '//api.postmarkapp.com//stats/outbound/opens/platforms' \
--header 'X-Postmark-Server-Token;'
{
"Days": [
{
"Date": "string",
"Desktop": 0,
"Mobile": 0,
"Unknown": 0,
"WebMail": 0
}
],
"Desktop": 0,
"Mobile": 0,
"Unknown": 0,
"WebMail": 0
}