Thank you, and I look forward to hearing from you.
13. 落款之后的正式礼节问候是:Sincerely; Best wishes; Best regards。其他的都不甚正式。
Source: Olinger, A. (with assistance from Avineri, N. & Gray M.). Email Etiquette at the University. A Workshop of the UCLA Graduate Writing Center. October, 2010.