Learn what an acknowledgement receipt is and how to create one for your business (with a template and two examples). This is archived content from the U.S. Department of Justice website.The information here may be outdated and links may no longer function. (2) For an acknowledgment in a representative capacity: State of. I emailed my job application to the manager on Friday afternoon but received no response of acknowledgement. The business is closed on weekend. Once complaints have been received, a letter will be mailed to the complainant acknowledging receipt of the complaint. You can email the assigned Agent at the email address at the bottom of the letter sent to you acknowledging receipt of your complaint. These letters are legitimate, and we encourage you to follow the instructions to file a claim.