Can cordially be used as a business close?

Yes, "cordially" can be used as a business close, often conveying a polite and friendly tone. It is appropriate in formal communications, such as emails or letters, where you want to maintain professionalism while expressing warmth. However, it's essential to consider the overall tone of your message and your relationship with the recipient to ensure it fits well. Alternatives like "sincerely" or "best regards" may be more common in certain contexts.