The applications of English letters are numerous, as they are used extensively in written communication, including emails, letters, memos, reports, and other types of documents. English letters are also used in advertising and marketing materials, such as billboards, brochures, and advertisements.

Moreover, English letters are used in creative writing, including poetry, novels, short stories, and plays. They are also used in academic writing, such as research papers, dissertations, and theses.

In addition, English letters are used in typography and graphic design to create logos, signage, and other visual materials. They are also used in computer programming to represent data and code.

Overall, English letters are an essential element of written and visual communication, and they are used in many different ways in various fields and industries.