The article explains different ways to close an email.
17 Ways to End an Email – Business English Emails
If you can’t decide what to write and have no idea what would be most appropriate, close your email with a simple “thank you.” The sentiment is never out of place. After all, the recipient took the time to read your message, and time—especially in the business world—is precious. Using “thank you” to close an email can actually increase your chances of a response.)
If the universal “thank you” isn’t for you, there are other options for both business and personal emails.
What you choose and what is appropriate can—and should—depend largely on who you are and who the recipient is. Always consider the recipient's circumstances, your relationship to that person, and the tone of your message.