letter and e-mail

letter and e-mail letter 近义词是不是e-mail? I think e-mail is a cheaper and quicker way than a letter. I think e-mail is a `cheaper and quicker way than a letter这句 求英语作文 letter and mail e-mail,business letter,msn三者的区别 write a letter和 send an e-mail Cell Phone,E-mail and Voice Mail课文的翻译 mail letter造句 E-mail E-mail: we can send a letter by fax or E-mail 为什么填or