上午搞了个简单的小WinForm程序自动获取一些网络上的内容并处理后发到我的邮箱，邮箱会自动转发至电信189邮箱然后手机就会收到短信。
因为发现189邮箱会把完整的subject都发送到手机（长短信）（139邮箱会自动截取一定长度的subject下发），所以就想可否把所需内容直接都放带标题中表述，但是电子邮件的标题到底有多长呢？
引用地址:http://stackoverflow.com/questions/1592291/what-is-the-email-subject-length-limit , RFC 2822
There are two limits that this standard places on the number of characters in a line. Each line of characters MUST be no more than 998 characters, and SHOULD be no more than 78 characters, excluding the CRLF.
即：最大不允许超过998字符，推荐不超过78个字符 。
使用小WinForm程序调用 smtp.163.com 发送给gmail ，gmail可接收并在subject栏显示的长度确为998 ，不过gmail的web界面转发出去时长度最大为250。
Web查看：
| from |  ****@163.com |
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| to | ********@gmail.com |
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| date | Fri, Mar 19, 2010 at 2:41 PM |
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| subject | 94882.com_30801.com_00904.com_________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ |
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| mailed-by | 163.com |
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PS：已经习惯用 NotePad++了，今天特升级至5.6.8 了，好用
