While a simple "Hi," "Hello," or even "Hey" is appropriate in casual correspondence, a more formal salutation is appropriate when you are emailing about a business_related matter, such as a cover letter, letter of recommendation, or inquiry letter.
Finalizing the Letter. Edit and Review: Once you are finished with writing the letter, try to look for errors. Check for spellings, punctuations, grammatical errors. Don’t Staple the Letter: Use a paperclip on the top of the left corner if there are many pages. Use of staple doesn’t look nice for a business letter. Posting of the Letter: Always use clear and correct spelling for mentioning the name and address of the recipient.