The art of letter writing may have taken a backseat to technology, However, it hasn’t entirely gone away. Formal letters are still needed and still very much used.
Employment letters
When applying for employment, writing letters is almost an expectation. Whether it be a cover letter, application letter, a thank you letter for an interview, a letter requesting a promotion.
Business letters or letters to authorities
Nowadays, it is sometimes necessary to write letters to a congressman or higher authorities
Informational letters
These types of letters inform offices or people of needed data like rules, regulations, events, invitations, or procedures.