what is the difference betweeen informal and formal letter?
Formal letters are written to important people like boss editor for an important work. Eg a 3 day holiday permission from your boss
Informal letters are written to friends and relative for any informal purpose. Eg sharing your experience in a foriegn place with your distant friend
Informal letters are written to friends and relative for any informal purpose. Eg sharing your experience in a foriegn place with your distant friend