A letterhead is a heading at the top of a sheet of letter-sized paper, typically used for official or professional correspondence. It usually includes essential information such as the company or organization’s name, logo, address, contact details (phone number, email, website), and sometimes additional design elements like a watermark or background graphic. The purpose of a letterhead is to provide a professional and branded format for written communication, reinforcing the identity and credibility of the sender. It’s often used for letters, memos, invoices, and other official documents. A well-designed letterhead can leave a lasting impression and convey professionalism to recipients.