This article focuses on the extraction of perhaps the most common form of availability data: E-mail headers.
本文主要介绍如何提取最常见的可用性数据：电子邮件标题。
Extracting E-mail headers and processing the entries for sent time is relatively easy with the mail: : IMAPClient and IO: : Socket: SSL modules from CPAN.
用来自CPAN的Mail：IMAPClient和IO：Socket：SSL模块提取电子邮件标题和处理发送时间相对简单一些。
One likely task is reading a file containing E-mail messages and extracting their headers and contents.
一个可能的任务是，读取包含电子邮件消息的文件，并提取它们的标题和内容。
The body_string function used by the -dump switch earlier skips the messages headers, which are usually not interesting when you're looking at E-mail quickly.
先前- dump开关使用的body_string函数会跳过消息头，这些消息头在您快速浏览电子邮件时通常没什么价值。
When used on E-mail messages or Usenet articles, the preceding one-liner strips out all headers.
当在电子邮件消息或usenet文章中使用时，前述单命令行程序将除去所有标头。
It encrypts message text, E-mail attachments and reply-to headers.
该软件加密信息文本，电子邮件附件以及回复标题。
It encrypts message text, E-mail attachments and reply-to headers.
该软件加密信息文本，电子邮件附件以及回复标题。
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