Sender's Address
When writing an informal letter, the sender's address should be placed at the top of the letter, aligned to the left side. This helps the recipient quickly identify where the letter is coming from. Here’s how to format it:
- Include your name on the first line.
- Follow this with your street address on the second line.
- On the third line, include your city, state, and postal code.

Example of Sender's Address:
- John Doe
- 123 Main Street
- Springfield, IL 62704

Date
After the sender's address, leave a line and write the date, also aligned to the left side. This indicates when the letter was written.

Recipient's Address
Next, leave another line and write the recipient's address, which should also be aligned to the left side. This is important for clarity.

Ending of the Letter
The closing of the letter, like "Yours faithfully" or "Best wishes," should be aligned to the left side as well. This maintains a uniform format throughout the letter.
- Always leave a few lines between the closing and your name to provide space for a signature if needed.

Example of Closing:
- Yours faithfully,
- John Doe

Final Note
In summary, both the sender's address and the letter's closing should be aligned to the left side for a clear and organized presentation. This style is commonly used in informal letters, ensuring that the content flows logically and is easy to read.