email to language school

Hello, I am preparing an email to be sent to many German language schools in Germany.

I will try to write this mail in three languages: English, French and German (if possible).

The main questions I have to ask are:

1. How long may be the DSH preparation courses? (DSH is a Certification of German-language Proficiency)
2. Is there a course cession that starts the next July?
3. What is the global cost of the courses? Should I pay them at starting or can I have the possibility to pay monthly?
4. I need an inscription to apply to the visa, how much should pay to have the inscription certificate by post?
5. Is it possible to have a university hearth and how much does it cost?

Thank you to excuse my grammar and spelling mistakes. Enlgish is not my native language. Plz comment my mail I need your help.

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Dear Sir or Madam,

My name is xxx and I am from xxx, xxx. I am currently studying engineering preparatory studies in xxx.

I am interested by the studies of engineers in Germany, and learned that to be able to study in Germany knowledge of the German language is essential. This is why I am in the search of a programme of course of language to prepare the DSH exam.

I am interested by the course which you offer, and I have some information to ask you:

1. How much lasts the DSH preparation courses? (DSH is a Certification of German-language Proficiency)
2. Is there a course cession that starts the next July?
3. What is the global cost of the courses? Should I pay them at starting or can I have the possibility to pay monthly?
4. I need an inscription to apply for the visa, how much should pay to have the inscription certificate by postal way?
5. Is it possible to have a university hearth and how much does it cost?

I await with interest your answer to my questions.

Sincerely yours,