A colored scan of the Vietnam visa approval letter will be sent to your email, so please make sure that you have provided us with the correct email address. Normally the scan of Visa Approval letter will be in PDF or JPEG format. Therefore, to read and print it, please make sure your PC / laptop has installed these programs already.
After receive the Visa approval letter, you should print it out (black and white is OK). You are not allowed to board the airplane without this letter in paper in advance.