将外部CSS转换为内联CSS，以便在Rails中使用邮件。

I am trying to create an application that will send out style-heavy emails and have required clients working except Google's Gmail. I researched the issue and it looks like Gmail strips out CSS from external files or CSS nested in the 'style' tag. Does an easy way exist of moving style from an external file to being inline?I am trying to create an application that will