'Schedule Send' and 'Undo Send' across all platforms
I’ve noticed that the Yahoo Android mail app includes the “schedule send” and “undo send” options, which are handy features I regularly rely on. However, these options aren’t currently available when using Yahoo Mail on a web browser. Since these features greatly enhance the user experience and help set Yahoo Mail apart, it would be fantastic to see them implemented consistently across all platforms. Since the backend already supports these functionalities, extending them across all platforms seems like a great addition. Would you consider adding this to your future updates?

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Judith Sullivan commented
Google has an option to allow a user the option to unsend an email for a prescribed amount of time after one clicks the send button. The time is determined by the user and is most helpful in those moments when, after clicking send, one suddenly spots a typo or recalls something that should have been included or deleted.