Postal services in other countries are experimenting with offering electronic mail services to customers; some have expanded into banking too.
其他国家邮政业都在尝试向客户提供电子邮件服务，甚至还有一些已经将此扩大到了银行业。
Which layer of the OSI model provides network services to processes in electronic mail and file transfer programs?
在OSI模型的那一层提供网路服务去处理电子邮件何档案传输程式?。
Various business services like domestic and foreign electronic letters, ritual letters, handing-off advertisement, and express mail delivery are added in post offices.
邮局增加了各种商务服务，如国内外电子信函，礼节信函，传递广告及特快专递等。
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