Since Vietnam reopened its borders and resumed pre-pandemic visa policies in March, it has issued 459,000 e-visas.
An e-visa costs US$25 and takes three working to be issued, the Immigration Department said.
It called on foreigners to visit the official website for e-visa application at evisa.xuatnhapcanh.gov.vn.
Foreign passengers arrive at Noi Bai International Airport in Hanoi, June 2022.
There has been a spate of misleading and false information about visa fees, especially on social media.
The department wants to increase the number of countries whose nationals can apply for e-visas.
Vietnam currently offers 30-day single-entry e-visas to citizens of 80 countries and territories.
Following the Covid outbreak in early 2020, the government suspended e-visas for nearly two years until March this year.
So far this year Vietnam has received only 1.87 million foreign visitors, or 30 percent of its full-year target of five million.