03 Letters' Type Formal - Principal, MLA, Ministers, Commissioner, Any Govt. Official - No Contraction I am writing this letter to inform you or to inquire . Does not, Do not, Cannot, Did not, Should not, Would not. Yours Faithfully Semi-Formal - Landlord, Bank Manager (Formal), Amazon Customer Care, Hotel Manager - Half Contraction I'm or I am (in some cases) writing this letter to inform you or to inquire Doesn't, Don't, Can't, Didn't, Shouldn't, Won't Yours Sincerely Personal - Full Contraction Hope this letter finds you well. I'm writing to inquire Neighbours/parents/relatives Regards Exam/Job Interview All the Best Best Wishes Fever/Health Issues/admit Get well soon Any Greetings Love with love Lots of love Loads of love Invitation See you soon