In modern business communication, traditional paper‑based business letters are still in use. Yet e‑mails and faxes have gained great popularity because of their unique advantages. They occupy an irreplaceable position in daily commercial activities.
在现代商务沟通中，传统纸质商务信函仍在使用。但电子邮件和传真凭借自身独特优势得到广泛应用，在日常商业活动中占据不可替代的地位。
E‑mail is the most frequently‑used tool in modern business. Its first advantage is speed. Messages can be sent and received within seconds regardless of geographical distance. Secondly, it is low‑cost. Sending emails needs no paper, envelopes or postal fees. Thirdly, it is convenient. People can attach documents, pictures and data files. Emails can be stored, forwarded and searched easily. Besides, emails create formal written records for business events.
电子邮件是现代商务使用最频繁的工具。第一大优势是速度快，不受地理距离限制，数秒之内即可收发信息。第二，成本低廉，发送邮件无需纸张、信封和邮费。第三，便捷性，可以附加文档、图片与数据文件；邮件便于保存、转发、检索。此外，电子邮件可为商务事件留存正式书面记录。
However, emails also have limitations. Emails may be ignored among huge volumes of messages. Information may risk leakage. Sometimes emails cannot guarantee 100% confidentiality.
但是电子邮件也存在局限。海量邮件当中，邮件容易被忽略；信息存在泄露风险，有时无法保证百分之百保密。
Fax is another important written business tool. The outstanding merit of faxes lies in its legal validity. A fax can transmit signatures and official seals directly. In many business situations, fax copies are accepted as valid evidence for transactions. It is faster than postal mail and does not require complex network settings.
传真是另一重要商务书面工具。传真突出优势在于法律效力，可以直接传递手写签名与公章。很多商务场景下，传真件被视作交易的有效凭证。它比邮寄信件更快，也不需要复杂的网络设置。
Compared with e‑mails, faxes are less flexible. Paper consumables are required. Yet it is still widely used for contracts, orders and official documents where signature authenticity matters.
和电子邮件相比，传真灵活性较差，需要纸质耗材。但在看重签名真实性的合同、订单、正式文件业务中仍然被大量使用。
To conclude, emails excel at high‑speed, low‑cost daily communication with file‑attachment functions. Faxes are valued for legal validity and direct transmission of signatures and seals. Together they satisfy different practical needs in modern business correspondence.
总而言之，电子邮件擅长高速、低成本的日常沟通，支持附件功能；传真因其法律效力以及签名、印章直接传输而备受重视。二者共同满足现代商务信函的各类实际需求。