Yes, you can apply for a Vietnam e-Visa if you are a citizen of a country other than your country of birth, as long as you hold a valid passport from the country that you are applying to.
For example, if you are a citizen of India but were born in the United States and hold a valid US passport, you can apply for a Vietnam e-Visa using your US passport. The e-Visa is linked to your passport, so you must enter the same passport information when applying, as you will use it when entering Vietnam.
When you apply for a Vietnam e-Visa, you will need to provide your personal and passport information, including your full name, date of birth, passport number, nationality, and dates of passport issuance and expiration. You will also need to upload a scanned copy of your passport's bio page, which contains your personal information and a passport-sized photo of yourself.
It is important to note that the Vietnam e-Visa is only available to citizens of certain countries. If your country is not on the list of eligible countries, you will need to apply for a traditional visa through a Vietnamese embassy or consulate. Therefore, it is recommended that you check visa requirements on the Vietnam Immigration Services website for the most up-to-date and accurate information.