Historically, letters have existed from the time of ancient India, ancient Egypt and Sumer, through Rome, Greece and China, up to the present day.
During the seventeenth and eighteenth century, letters were used to self-educate.
Formal English: We use it when writing essays for school, cover letters to apply for jobs, or emails and letters at work.
Informal English: We use it with friends, children, and relatives.
Letters were a way to practice critical reading, self-expressive writing, polemical writing and also exchange ideas with like-minded others.
For some people, letters were seen as a written performance.
Nevertheless, frequently, the following arguments are put forth saying letters may have the advantages over email: This process, depending on how far the sender is from the recipient, can take anywhere from a day to 3–4 weeks.
International mail is sent via trains and airplanes to other countries.
For others, it was not only seen as a performance but also as a way of communication and a method of gaining feedback. Archives of correspondence, whether for personal, diplomatic, or business reasons, serve as primary sources for historians.
At certain times, the writing of letters was thought to be an art form and a genre of literature, for instance in Byzantine epistolography.