most people often send emails to their friends and family members, and in this context, writing style and grammar are not that important. when you are writing in a more formal situation, though, it is important to ensure that the emails you send convey the meaning you intend them to. sending emails that are informally or carelessly written with spelling errors and typos is no less harmful than directly stating that you do not respect or care about the recipients. such emails may deliver an impression of indifference or ignorance to the person you write to, which can jeopardize a relationship that may have taken years to build.
밑줄친 부분을 해석해 주세요. 그리고 밑줄의 them이 가리키는 말은 emails 가 맞나요? 그리고 마지막에 to뒤에 생략된 말은요?