text: is there a way i would know if someone else is accessing my yahoo mail?   if you really love your email address, is it important to you, or don't want to change it, try readnotify for free, and if you decide to keep it, it's about $24 a year.  it installs an activetracker plugin to add the tracking for your email. it will give you:  date and time opened  location of recipient (per their isp city /town)  map of location (available on paid subscriptions)  recipients ip address  apparent email address of opening (if available)  referrer details (ie; if accessed via web mail etc)  url clicks  how long the email was read for  how many times your email was opened  if your email was forwarded, or opened on a different computer.  it's useful to know about email usage.  besides this, what should be done is change the password