[header] How to sign an email [title] Use a version of " my best " when signing emails to people you work with frequently. [step] Other versions of " best " include " all best, " " my best to you, " simply " best " and " best regards. " [substeps] Remember that the more words you use, the more formal your sign off will be. 
Judge the formality based on the person to whom you are writing and their relationship to you. [title] Avoid " thanks " or versions of it.