Email, Messaging, & Video Calls Email Why Yahoo Mail Doesn't Keep You Logged In How to stay signed in to Yahoo Mail on any device Share Pin Email Print Email Yahoo! Mail Gmail By Heinz Tschabitscher Writer A former freelance contributor who has reviewed hundreds of email programs and services since 1997. our editorial process Heinz Tschabitscher Updated December 01, 2019 Even if you choose to stay signed in when you log in to Yahoo, Yahoo still might prompt you to log in each time you check your Yahoo Mail. If this is the case, then the browser isn't saving login cookies, which are bits of data that let Yahoo know you're a return visitor. To stay logged in to your Yahoo Mail account, make some adjustments to the browser security settings. Information in this article applies broadly to using Yahoo Mail on any device with any browser. When You Have to Log In to Yahoo Mail The cookie a browser saves when you visit Yahoo Mail applies only to the browser and device you were using at the time of your visit. As long as you visit the login page with the same device and browser, you shouldn't have to log back in. However, if you log in with a different device or browser, Yahoo won't find the login cookie, so you'll have to enter your username and password. If you're using the same device and browser but are prompted to log in, the cookie in the browser that logs in to Yahoo mail automatically was deleted. How to Stay Logged In to Yahoo Mail You can prevent your computer from deleting browser cookies, including the one for your Yahoo Mail login credentials, in a few ways. Select Stay Signed In When you log in to Yahoo Mail, select the Stay signed in checkbox. Don't Sign Out Don't select Sign out in the box that appears when you select your name at the top of any Yahoo page. Don't Delete Cookies Don't clear browser cookies manually. Also, check the browser settings to make sure it isn't set to delete cookies when the browser window closes. If you run browser extensions and anti-spyware that automatically clears the browser history, disable them or make an exception for the yahoo.com domain. Don't Use Private Browsing Using the browser's private browsing feature prevents it from storing cookies; in this way, the browser doesn't track your internet history—but you'll have to sign in to Yahoo Mail each time you visit. Using this feature frequently may explain why your login information isn't saved. If you prefer not to log in to Yahoo Mail each time you visit, don't use private browsing. The various browsers have different names for the private browsing feature:Google Chrome: Incognito Mode.Edge: InPrivate Browsing.Internet Explorer: InPrivate Browsing.Mozilla Firefox: Private Browsing.Safari: Private Browsing.