Advantages of e‑mail 电子邮件优点
① high speed, free from distance 速度快，不受距离限制
② low‑cost 成本低
③ convenient: attach, store, forward, search files 便捷，可附件、保存、转发、检索
④ keep written business records 留存书面业务记录
Limitations of e‑mail 电子邮件局限
easy to be overlooked; risk of information leakage; poor confidentiality.
容易被忽略；信息有泄露风险；保密性有限。
Unique importance of fax 传真独特重要性
① legal validity; transmit signatures and official seals directly 具备法律效力，直接传输签名、公章
② faster than postal mail, simple operation 比邮寄快，操作简单
③ used for contracts, orders requiring authentic signatures 多用于对签名真实性有要求的合同、订单
Drawbacks of fax 传真缺点
less flexible; need paper consumables.
灵活性不足，需要纸质耗材。