Right out of the box, Firefox doesn't store contacts. Are you working with the features of a particular email website, or is your question about Thunderbird? For an email site, you could mention which one it is for more specific assistance. Meanwhile, when you have a problem with one particular site, a good "first thing to try" is clearing your Firefox cache and deleting your saved cookies for the site. 1. Clear Firefox's Cache orange Firefox button ''or'' classic Tools menu > Options > Advanced On the Network mini-tab > Offline Storage : "Clear Now" 2. If needed, delete the site's cookies here While viewing a page on the site, right-click and choose View Page Info > Security > "View Cookies" Then try reloading the page. Does that help?