Guidelines for Names and Titles: The salutation should typically use the person's last name, along with a "Mr." or "Ms." In general, avoid using "Mrs." or "Miss" unless you are certain of how the woman wants to be addressed. When in doubt, default to using "Ms."
Closing: When you're writing a business letter or email message it's important to close your letter in a professional manner, so you're letter, in its entirety, is well_written and professional. Signature: When you are sending a paper letter, finish the letter with your signature, handwritten, followed by your typed name. If this is an email, simply include your typed name. Finally, don't forget to spell check and proofread your letter before you send it. Again, ask a family member, friend or colleague to review it for you. It's always good for another pair of eyes to take a look because it's hard to catch our own mistakes.