Sandra, what a brilliant idea that would be for a Creative Writing exercise for, say, 14yr olds! They'd have to imagine they were a scammer in another country, and to phrase their spiel with a slightly 'off' turn of phrase now and then, to demonstrate their lack of good English. They could pitch the letter at a certain type of victim, say a businessman or a taxpayer, and use the relevant issues in their text. It would stretch their imaginations, get them to write in a different style and, most importantly, train them to identify and recognise scams and avoid them in adult life. One could show them several examples, such as those on this thread to get them going.
Sigh... I never stop being a teacher inside my head...