Here are the style tips you should follow:
This style of the letter is written in the formal business format, and make sure you do not indent any of the paragraphs of the body of the letter.
How to write a “to whom it may concern” letter?
It is never used when you know the name of the person you need to contact. Primarily, you will find this greeting on letters of recommendation, job search inquiries, cover letters, or when you do not know the name of the person you need to contact to address a complaint or question. It is used at the beginning of the letter, an e-mail, or other forms of correspondence. You use this greeting when you do not know the name of the person responsible for your particular concern. To Whom it May Concern Letters & Emails When to Use “To Whom It May Concern” When they do not know the name of the person they are to address, this is still the accepted and polite salutation to use. A professional business always writes formal letters in business formats. Contrary to some experts’ opinions, businesses are not trying to be more natural or conversational. It is also used after you have made every effort possible to find the name of the correct person who you should be addressing your content towards. If you do not know the name of the person that handles the particular issue you are writing about, you use this salutation. “To Whom It May Concern” is a salutation that is used when you do not know who you are to address your formal letter.