New answers tagged resources
I don't know if the following is what you expected to get here, but... Your examples would be translated to: I have attached the document in this mail - Ich habe das Dokument an die E-Mail angehängt. (not the best phrase) or Ich habe das Dokument der E-Mail beigefügt. (a bit better) Please find the document attached with this mail - Bitte beachten Sie das ...
It is my experience that the best website to learn new words is Memrise. It is free and there are thousands of coures. I did not look at deeply. However, there is/are absolutely (a) course(s), which teaches Business German. You can find the site here
Top 50 recent answers are included