Why are spelling and grammar important in an email?

People are more tolerant of language and usage in e-mail than in paper-printed communication. Even so, good grammar, spelling, and usage reflect well on you even in an e-mail. In addition, poor grammar and spelling can detract from your message. This is most important in business-related emails. A poorly written business email can waste time for both the writer and the recipient when the email results in the accomplishment of incorrect work or when multiple emails are exchanged in an attempt to understand the issue.