How do you address a thank you letter to a company?

  • Your address at top left corner
  • Date
  • 3 spaces and then the address of the company
  • If it is to a specific person and you don't know their name or if they are male or female use: Dear Sir/Madam
  • If you do know it's a man then you can put ATTENTION: Mr. Robert Smith
  • If you do know it's a woman then put ATTENTION: Ms. Sue Smith

If it's to the whole company put: Management & Staff (then address under that.)