Update: If you are are HIPAA covered entity and have Protected Health Information (PHI) in your email, installing Boomerang would not be an option for your professional email. They aren't signing a Business Associate Agreement, and they are accessing and saving your emails that include PHI. So, stick to using this feature for your managing your personal emails!
I love using boomerang to manage my gmail accounts. Want to remember to follow up? Want to schedule an email to go out later? Boomerang can help. This quick video in under 5 minutes shows you how!
Click here to get boomerang for your gmail account
Got other tools you use to manage your inbox? Share them below in the comments.