Letters to immigration offices are letters sent to an office or department that deals with verification of documents for people entering a certain country. How you write your letter depends on what you want and which department you want. Maybe you want to apply for a work visa or request for an extension of a tourist visa. Perhaps you have basic questions regarding the country you want to visit. Whatever the reason, you need to explain for what purpose or in what context the letter is being written.
There are a few things you should keep in mind when writing letters to immigration offices. For starters, you need to type the letter on a computer using a recognized official or business format - a handwritten letter is hard to read and may not be given preference. Address the letter to the right person. Write a subject line to let the recipient know what the letter is about and why you are writing. Introduce yourself. Explain the reason for your letter. If there are any attachments, explain what they are. Close with a statement that explains what action you want the recipient to take in response to the letter.