Format for formal and informal letter

The Format of an Informal Letter is as follows –

1. Address: The address of the sender is followed by that of the receiver.

2. Date: The date is written below the address after leaving one line.

3. Salutation / Greeting (Dear / Hi / Hello)

4. Body: The matter of the letter is written here. It is divided into 3 paragraphs as follows -

a) Paragraph 1: beginning

b) Paragraph 2: Main content.

c) Paragraph 3: ending

5. Sender’s name and signature.

he Format of a Formal Letter is as follows – 
1. Sender’s address: The address and contact details of the sender are written here. Include email and phone number, if required or if mentioned in the question.
2. Date: The date is written below the sender’s address after Leaving one space or line.
3. Receiver’s address: The address of the recipient of the mail (the officer / principal / Editor) is written here.
4. Subject of the letter: The main purpose of the letter forms the subject. It must be written in one line. It must convey the matter for which the letter is written.
5. Salutation (Sir / Respected sir / Madam)
6. Body: The matter of the letter is written here. It is divided into 3 paragraphs as follows - 
Paragraph 1: Introduce yourself and the purpose of writing the letter in brief.
Paragraph 2: Give a detail of the matter.
Paragraph 3: Conclude by mentioning what you expect. (For example, a solution to your problem, to highlight an issue in the newspaper, etc).
7. Complimentary Closing
8. Sender’s name, signature and designation (if any)