Informal Hi Pradeep! How's it going? Hope to hear from you soon, Take care, Formal Dear Sir/Madam, I am writing to request ... I look forward to a prompt reply. Yours sincerely, https://339efcb25eb75e967b0d-ff8eeadd950d51fd1fc939dca75b3973.ssl.cf1.rackcdn.com/assets_default.swf