SwiftUIMailView

struct MailViewTest: View {
   @State private var mailData = ComposeMailData(subject: "A subject",
                                                 recipients: ["i.love@swiftuirecipes.com"],
                                                 message: "Here's a message",
                                                 attachments: [AttachmentData(data: "Some text".data(using: .utf8)!,
                                                                              mimeType: "text/plain",
                                                                              fileName: "text.txt")
                                                 ])
   @State private var showMailView = false

    var body: some View {
        Button(action: {
            showMailView.toggle()
        }) {
            Text("Send mail")
        }
        .disabled(!MailView.canSendMail)
        .sheet(isPresented: $showMailView) {
            MailView(data: $mailData) { result in
                print(result)
            }
        }
    }
}