Elements of a LetterLetter FormatsEffective Letter WritingUnit 1 Love Letters Unit 2 Letters to Families and FriendsUnit 3 Letters to NeighborsUnit 4 Thank-You LettersUnit 5 Letters of CongratulationsUnit 6 Letters of InvitationsUnit 7 Letters of AcceptancesUnit 8 Letters of RefusalsUnit 9 Letters of ApologiesUnit 10 Letters of ResponsesUnit 11 Wedding CorrespondenceUnit 12 Letters of SympathyUnit 13 Appointments and InterviewsUnit 14 Letters of DisagreementUnit 15 Acknowledgments and ConfirmationsUnit 16 Anniversaries and BirthdaysUnit 17 Letters of AnnouncementsUnit 18 Goodwill LettersUnit 19 Holiday LettersUnit 20 “Get-Well” LettersUnit 21 Sensitive LettersUnit 22 Letters of AdviceUnit 23 Letters of TravelUnit 24 Letters to Organizations and ClubsUnit 25 Belated LettersUnit 26 E-mail