If you are going to use the same password for everything regardless of how many people tell you it’s a bad idea then please at least make your email password unique.   When someone has your email password they can often get their hands on other passwords that may be in old emails or may be easily retrieved by lost password retrieval systems.  Email passwords are also commonly stored some where on computers in spots often targeted by viruses.  Some email providers such as gmail has a section of the website that will let you see where you last logged in from.  When you log in to gmail it is on the far bottom right corner labeled “Details”.