It's frustrating when Yahoo! Mail isn't working. Ideally, there would be an easy way to see when Yahoo! Mail services are down or struggling. Unfortunately, as of early 2019, Yahoo! Mail does not provide system status information for their free mail services.
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Unlike many other web service providers, this means that you cannot quickly identify the status of Yahoo!'s services. The following series of steps can help you identify and/or resolve issues when Yahoo! Mail is not working.
Check X (formerly Twitter) for Tweets from @YahooMail, @YahooCare, or even the main @Yahoo account. While rare, a Tweet from one of these accounts would serve as official confirmation that the Yahoo! Mail service is experiencing issues.
Additionally, a quick search for X can help you see if other people are having trouble connecting to Yahoo! Mail. Search for terms like Yahoo! Mail, YahooMail, or #yahoomail. Follow the links on each of these terms to see recent X search results for each entry. If you see multiple recent tweets from people mentioning issues with Yahoo! Mail, it's likely that any issue you're experiencing is affecting multiple accounts, not just yours.