fix(core): update

ts/mailgun.classes.account.ts

@@ -40,14 +40,39 @@ export class MailgunAccount {
   /**
    * sends a SmartMail
    */
-  public sendSmartMail(smartmailArg: plugins.smartmail.Smartmail) {
+  public sendSmartMail(smartmailArg: plugins.smartmail.Smartmail, toArg: string, dataArg = {}) {
     const domain = smartmailArg.options.from.split('@')[1];
-    this.postFormData(`/${domain}/messages`, [
+    const formFields: plugins.smartrequest.IFormField[] = [
       {
         name: 'from',
         type: 'string',
         payload: smartmailArg.options.from
+      },
+      {
+        name: 'to',
+        type: 'string',
+        payload: toArg
+      },
+      {
+        name: 'subject',
+        type: 'string',
+        payload: smartmailArg.getSubject(dataArg)
+      },
+      {
+        name: 'html',
+        type: 'string',
+        payload: smartmailArg.getBody(dataArg)
       }
-    ]);
+    ];
+
+    for (const attachment of smartmailArg.attachments) {
+      formFields.push({
+        name: 'attachment',
+        type: 'Buffer',
+        payload: attachment.contentBuffer
+      })
+    }
+
+    this.postFormData(`/${domain}/messages`, formFields);
   }
 }