It's surprising, but no sooner do you get an email id and the information flow is immense. If you take a few days away from working and beating down the email fire hose, it can flood back. This series of articles talk about Inbox Zero, an idea that has resonated with me:
You have no control over the world’s demands on your time and attention, yet you are the single person who has any choice over how you deal with it.
If you also deal with large amounts of email at work or otherwise, these articles are an interesting read.