1. **正式商务邮件：**
- 经典结束词：“Yours sincerely”或“Sincerely yours”，这是对已知收件人的标准商业格式，在整个通信过程结束后使用。
示例：
Thank you for your time and consideration in this matter. I look forward to hearing from you soon.
Yours sincerely,
[Your Name]
- 祝福语：“Best regards,”、“Kind regards," 或 “With best wishes，“传达了专业但友好的祝愿，并适用于大部分正规业务交流场景。
2. **非正式商务或者个人通讯：**
- 结束词汇可以更轻松随意些，例如："Regards"、 "Warmly", 甚至简单的"All the best".
示例:
Thanks again for all of your help with our project! Have a great day.
Regards,
[Your First name]
- 针对熟人朋友间的电子邮件，可以选择更加亲密真挚的祝福如:"Take care","Hugs & kisses (XOXO)","Hope everything is well."
3. **节日问候及特殊事件祝贺:**
在节假日或是特定庆祝时刻发送的信息，可以根据具体情况选择相应的祝福语：
如圣诞季可选用: "Season's greetings!" 和"Merry Christmas and Happy New Year!"
庆祝生日时则可以说: "Happy Birthday!", 并补充一句个性化的美好愿望比如"Wishing you joy on your special day surrounded by love ones."
4. **面试后感谢函**: 可以采用既感激又期待回复的形式:
Thank you once more for considering me as a candidate. Hoping to have an opportunity to further discuss my application with you, I remain...
接着可用 "Gratefully" 或者 "Respectfully yours".
5. 请求性质的信件，则可能以一种谦逊并抱有希望的态度来结尾，比如说 :"I appreciate your understanding and hope for a favorable response." 后接 "Thanks ahead" 或 "Looking forward to your positive reply" 这样的结尾短句。
总之，无论是何种类型的英文书信书写，请务必确保你的结束语符合情境要求并且真诚得体，这不仅有助于提升你书面交际的效果，更能展现良好的修养风度以及对他人的诚恳关怀之心。