At the first, I received a response message like this:
{ "message": "Bad Request", "errors": [] }
and this is my request payload:
{ "from":{"phoneNumber":"+19292561865"}, "to":[{"phoneNumber":"+14707816202"}], "text":"mms testing", "attachments":["data:image/jpeg;base64,/9j/4AAQSkZJRgABAQEASABIAAD/2wBDAAEBAQEBAQEBAQEBAQECAgMCAgICAgQDAwIDBQQFBQUEBAQFBgcGBQUHBgQEBgkGBwgICAgIBQYJCgkICgcICAj..."] }
Content-type: multipart/mixed
I found out that I can use MmsSender with my account, too.
I, therefore, wonder whether I'm missing something or if there are any permissions I need to specify but haven't?