写留学退学费邮件时，应注意以下几个要点：

明确退学原因 ：在邮件中清晰、简洁地说明退学的原因，比如不适应学校文化、学业压力、家庭原因等。避免使用模糊或负面的词汇。

表达尊重和感激：

无论退学原因是什么，都应该对学校和教师在过去的学习经历中给予的支持表示感谢。

说明后续计划：

描述你退学后的计划，比如打算回国工作、转到其他学校继续学习或是其他职业发展等。

提供必要信息：

包括你的姓名、学号、身份证号等详细信息，以及要求退还的学费金额，并提供相关证明文件。

邮件格式

Subject：

Request for Tuition Refund due to Unforeseen Circumstances

Dear [Recipient's Name],

I trust this email finds you well.

I am writing to request a tuition refund due to unforeseen circumstances.

Please find attached the necessary documents to support my request.

Thank you for your time and consideration.

Best regards,

[Your Name]

[Your Contact Information]

附件：

确保所有相关证明文件都已附上，如退学申请表格、医疗证明、财务证明等。

及时跟进：

发送邮件后，及时跟进学校的回复，确认是否收到退款申请，并表达对学校处理的期待。

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Subject: Request for Tuition Refund due to Unforeseen Circumstances

Dear [Recipient's Name],

I trust this email finds you well.

I am writing to request a tuition refund due to unforeseen circumstances. I have been diagnosed with [Disease Name] and am unable to continue my studies at [University Name]. According to the school's policy, students in such health conditions are eligible for a refund.

Please find attached my medical records and other supporting documents. I would be grateful if you could process my refund at your earliest convenience.

Thank you for your time and consideration.

Best regards,

[Your Name]

[Your Contact Information]

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请根据你的具体情况进行适当修改，并确保所有信息准确无误。