Tell me, how is writing a letter different from other forms of communication?

Writing a letter is relatively calm and allows one to sort out one's feelings carefully. The choice of paper and envelope represents a person's personality traits to a certain extent. The difference in the handwriting can also give a glimpse of the mood of the writer. Unlike other fast communication methods, letters need to be mailed and wait. The person who receives the letter will have an unexpected surprise. When reading the letter, looking at each other's handwriting, smelling the aroma of the ink, thinking about the situation when the other party wrote the letter. These are things that cannot be brought about by other methods of communication. But at the same time, because of the long time to send a letter, there is also the disadvantage of not being able to convey information in time.