Defining the User Need for Auto-Expiring Messages in WhatsApp

WhatsApp is getting ready to launch disappearing messages, a feature that removes messages from a chat automatically once a set period has passed. As a product manager, you are asked to explain the user problem behind it: write the problem statement the team is solving, describe who has that problem and in which situations, and explain why the way the app works today leaves it unsolved. ```hint Describe the pain without the feature Write down what goes wrong for people when every message stays on everyone's phone indefinitely, without mentioning timers or deletion. A problem statement that only makes sense with the feature already in it is a solution in disguise. ``` ### Clarifying Questions - Should the problem statement cover one-to-one chats, group chats, or both? Groups bring an admin and many recipients into the picture. - Is the feature meant to protect users from the person they are chatting with, or from whoever later gets hold of either phone or its backups? Messages that disappear do not stop a recipient from taking a screenshot first. - Which users matter most here: privacy-minded people choosing between messaging apps, or mainstream users with years of chat history and media on their phones? - Is the team's aim to attract or keep users, to strengthen trust in the product, or to address complaints such as phones running out of storage? ### What a Strong Answer Covers - A problem statement about users and their situations rather than about the feature, separating the underlying need from surface symptoms. - Specific segments and moments, such as sharing sensitive details once, lost or shared phones, chat backups, storage filled by group media, and casual conversation that never needed a permanent record. - Why today's options (clearing chats by hand, deleting single messages for everyone, moving the conversation to another messenger) fall short. - Clear boundaries: what the feature cannot protect against, and the new problems it may create, such as losing information someone needed or making abuse harder to report. - How the team would recognize that the problem has been solved. ### Follow-up Questions - Who should be allowed to turn the timer on in a chat, and what should the other participants see when it happens? - WhatsApp chats are end-to-end encrypted, so the team cannot read message content. How would you confirm that users actually have this problem before building the feature? - After launch, adoption is low, but people who turn the feature on rarely turn it off. Is it succeeding?