Writing formal an informal letters and e-mails

Open publication - Free publishing - More english

Click HERE and HERE if you are interested in finding out how to write an e-mail in English.

HERE how to write formal letters.

HERE an informal (friendly)letter.

Letters (Samples) HERE.

Are these letters formal or informal?

Correct the mistakes in the two letters (one formal and one informal) above.

HERE video 1, HERE video 2

HERE tips for writing letters