Data Entry Clerk Cover Letter Data Entry Clerks use computers to update and maintain information. They may also be required to transfer information from paper to computer files. It’s not so hard to process a job-winning cover letter for data entry. Follow these key best practices: Use a clear template. Your data entry cover letter can’t drag on forever like an Excel sheet. Make it concise and readable. Start with a strong opening line. Grab the recruiter’s attention right off the bat. The truth is, 60% of recruiters don't read cover letters. Write a data entry cover letter for the other 40%. Once your professional resume is finished, just do the following: First, make your cover letter for the data entry position personal by using the recruiter's . Next, mention a detail you love about the company.