Remotely Important 
Email is an important form of communication for most of us. 
Now, working from home, it has become even more integral in the way we do our jobs. 
Here are some things to remember: 
Include a clear subject.
Update the subject if the topic of the thread changes.
Reply at the TOP of the message.  Let the older messages get pushed down.
Name the attachments.
Most importantly, when you send a new message, never assume the receiver knows what you are talking about.  Be clear and detailed.  Summarize your topic if necessary.  And if you reference a website, Facebook page, or video, include the links! 

It takes a generous effort to treat an email conversation like you are physically there in person.  All matters of manners and professionalism are expected.