OS X Yosemite Mail App Features
If you live inside Mail on your Mac you'll be happy to know that Apple focused on making Mail better for the average user. In OS X Yosemite you can now send large attachments without messing around with external storage options and third=party services. This is amazing for users who routinely want to share larger files with coworkers or family members. You can send messages up to 5GB in size right from the Mail app.
Mail also includes the option to annotate documents and fill out forms inside a message. The image above shows annotation on a photo to call attention to something with more than just text.
The new Mail app in OS X Yosemite is also faster, so you'll be able to read, send and get new email faster.