About Visa Processing in Vietnam

We do not recommend any particular visa agencies here as there are so many options available on the internet. We strongly advise guests to follow the law and choose a trustworthy visa agency.
In this article, we recommend using the official Vietnamese immigration government website for visa processing: https://evisa.xuatnhapcanh.gov.vn/trang-chu-ttdt. 
The information on this website is helpful and accurate. 
The following is an excerpt from the website:
“General:
Vietnamese visa is a kind of travel documents granted by Vietnamese competent authorities, providing permission to travel to and enter Vietnam.
An electronic visa (E-visa) is one of visa types issued to foreigners by Vietnamese Immigration Department via electronic system. Vietnam E-visa is valid for maximum of 30 days, single entry.
Outside Vietnam foreigners who want to enter Vietnam can personally apply for E-visa or through the inviting/guaranteeing agencies and organizations.
E-visa fee is paid via electronic payment gateway as prescribed by the Immigration Department. The fee will not be refunded if the application is refused.
List of Countries that allowed E-visa issuing.
List of Ports that allowed foreigners enter and exit Vietnam by E-visa.
Conditions for being granted e-visa:
* Outside Vietnam foreigners;
* Holding valid passport;
* Not falling into the cases of suspension from entry prescribed in Article 21 of Law on foreigners' entry into, exit from, transit through, residence in Vietnam.
Selections:
1. For outside Vietnam foreigners, click here,
2. For inviting, guaranteeing authority/organization, click here,
3. For airlines, click here.
Notes:
E-visa holders in Vietnam may be considered to get new visa if being invited/guaranteed by authority/organization/individual in Vietnam in accordance with Law on foreigners' entry into, exit from, transit through, residence in Vietnam.
Foreigners who entry Vietnam must comply with Vietnamese law.
Inviting/guaranteeing foreigners in accordance with section 1, Article 16, Law on foreigners' entry into, exit from, transit through, residence in Vietnam; can be applied through electronic system (click here).
Notice: Foreigners falling into the cases prescribed in Clauses 1, 2, 3 and 4, Article 8 of the Law on foreigners’ entry into, exit from, transit through and residence in Vietnam, shall not apply for e-visa on this Website. They should send visa applications via the inviting or guaranteeing agencies and organizations to the competent agency of the Ministry of Foreign Affairs. (Click for detail)”

“The Vietnam Immigration portal provides the following services:
1. E-visa issuance
2. E-transaction applying for visa at oversea Vietnamese representative offices and Checkpoints
3. Declare temporary residence for foreigners
4. ABTC issuance
5. Passports issuance for Vietnamese nationals.”
(Source: NATIONAL WEB PORTAL ON IMMIGRATION https://evisa.xuatnhapcanh.gov.vn/web/guest/home)