How to Annotate PDFs in Mail with Yosemite

Annotating PDFs in Mail with Yosemite is a straightforward process. Here's how you can do it:

1. Open the email with the PDF attachment in Mail.

2. Click on the PDF attachment to open it in the preview mode.

3. Click on the markup button in the toolbar. It looks like a toolbox with a pen.

4. Choose the annotation tool you want to use from the menu. You can choose from tools such as text, highlight, underline, and more.

5. Once you have selected your annotation tool, you can start marking up the PDF. For example, if you have selected the highlight tool, you can click and drag to highlight the text you want to emphasize.

6. When you are done annotating the PDF, click on the "Done" button in the toolbar.

7. You can save the annotated PDF by clicking on the "Save" button in the toolbar.

That's it! You have successfully annotated a PDF in Mail with Yosemite.