How do I change picture on Yahoo! Mail?

If you are not referring to your profile picture but the Personalized Sign-in Seal then refer to this sign. https://protect.login.yahoo.com/

Isn't that a feature on gmail rather than Yahoo mail? You can hover your mouse over the email address or the picture itself and click "Contact Info" and then simply select the picture there.

Go to http://yahoo.com and sign in. Click the "Hi (your name)" link next to your current picture. Once in your profile, click "edit profile details" (That would be the top line on the left under the words "Profile Information.") Now currently, you can go to Yahoo Profile, but that is going away in a few weeks.  Though you will still be able to change things like your picture and things, Yahoo Profile will go away, the last vestige of Y!'s try at social networking ala facebook.  But we digress. Click your picture (It should say change picture at the bottom of your pic when you hover over it). Once you click you can follow the instructions to upload a new picture. Hope it helps.

From Yahoo Help Updates to Yahoo ProfileYahoo Profile (http://profile.yahoo.com) no longer exists. But don't worry - your comments on various Yahoo properties didn't disappear! Most relevant settings are now in your account settings. We simply removed the ability to view public profiles and the “about me” and “my interests” sections. Why? Yahoo Profile was created to let you view public info about others. With Yahoo, you could check out profile pictures, nicknames, and comment histories as well as manage your own publicly visible settings. It never quite took off. Very few people look at other people's public profiles, so we switched our focus to the things that matter to you most. What does this mean for you? You can still post comments on the various Yahoo properties and your Yahoo nickname and profile pic still exist. Right now, you aren't able to edit your profile picture, nickname, gender, or date of birth from within your account settings. We greatly appreciate your patience while we work to update this and create new ways to personalize your account.

You don't, and can't.The ability to change ones profile picture went away when http://profiles.yahoo.com shut down in January of 2015. They've not introduced a new method to change your profile picture, and given the state of Yahoo, I have my doubts that the feature will ever return.

Yahoo Profile (Page on http://yahoo.com) no longer exists. But don't worry - your comments on various Yahoo properties didn't disappear! Users won't be able to look at other users' profiles anymore, you will soon be able to update your profile picture, Yahoo nickname, and other account settings.https://help.yahoo.com/kb/SLN25611.html?impressions=trueYou can hover your mouse over the email address or the picture itself and click "Contact Info" and then simply select the picture there. Click the "Hi (your name)" link next to your current picture. Now currently, you can go to Yahoo Profile and find the option to change the profile picture.If you signed up for any Google service using your Yahoo email (for example, Google Plus or Picasa), Google will have a Google account profile for your Yahoo email address.  If that Google account profile has a photo associated with it, that photo is public and Google will show that profile picture to anyone using GMail who receives an email from that Yahoo email address.Yahoo Profile was created to let you view public info about others. With Yahoo, you could check out profile pictures, nicknames, and comment histories as well as manage your own publically visible settings.You can also go to the below link for help by yahoo https://in.help.yahoo.com/kb/helpcentral

You can hover your mouse over the email address or the picture itself and click "Contact Info" and then simply select the picture there. Click the "Hi (your name)" link next to your current picture. Now currently, you can go to Yahoo Profile and find the option to change the profile picture.Yahoo Profile (http://profile.yahoo.com) is no longer active. Users won't be able to look at other users' profiles anymore, you will soon be able to update your profile picture, Yahoo nickname, and other account settings.If you still need help, contact yahoo customer service at http://www.yahoocustomerservice.org

Follow the instructions in this video until you come across the part where it says change your profile picture/add profile picture. GL