MailTags 是一款Mac上实用的邮件标签扩展插件，能够帮你的Email添加标签，帮你快速找到需要的邮件，很实用！
[MailTags 在官网上售价30美元，约合人民币180元]
软件介绍
MailTags lets you add comments, due dates, project notes and priority rankings to your messages, all without leaving your Inbox!
MailTags is a feature-packed companion to Apple Mail:
Integrated interface - Add tagged keywords, project notes, and priority rankings through a convenient side panel.
iCal supportCreate synchronized ToDos and Events in iCal directly from Mail.
IMAP support - Sync your tags with your IMAP server for access across multiple computers.
软件截图
