Neither is correct. If you're going to use "have" you're making it past tense and the past tense of send is SENT. It would be "has been sent" or "has sent" depending on what you're trying to say. For example, "The package has been sent" or "He has sent the package."
They are not available due to the fact that they are not able to stream. They can be sent to you through the mail if you have a full Netflix account but some movies just can not be viewed in the same way.