Vietnam visa is an essential governmental certification for foreigners to enter Vietnam. In other words, it is an essential certification issued by the governmental offices of Vietnam, which certified foreigners wish to enter. Visa is usually stamped on passports.
It is a visa you can pick up at one of three Vietnam international airports (Noi Bai, Tan Son Nhat or Da Nang international airport) and you can only obtain it if you enter this country by air. More specifically, Vietnam Visa on arrival is the visa which is applied for those who travel to Vietnam by air only.
It is an official document issued by the Vietnam Immigration Department. Having this letter in hand, you will be permitted to enter Vietnam, get your visa stamped at Vietnam international airports or Vietnam Embassies/ Consulates and then you can enter and exit Vietnam for a given period. In other words, the Vietnam Visa approval letter allows you to stay in Vietnam within the time cited on it.
Dear sir/madamThis is the 1st time I come to Vietnam and don't know how to get a visa. I contacted your email and was instructed very clearly. I got my approval letter already and now I'm ready to print it out to get my Vietnam visa at the airport. I really appreaciate your enthusiasm with your customer.