Either update the app or grant temporary access in your account settings. The app likely has outdated security protocols and are disabled by default.
Update your app - If you receive an error message like 'Server password has changed' or 'Authentication failed,' your app might be outdated. Hi I already have an email account with Yahoo which I control through Outlook 365. Use your Apple ID or create a new account to start using Apple services. Keep the number of devices pulling from IMAP limited and current. Sign in to iCloud to access your photos, videos, documents, notes, contacts, and more. Outdated devices pulling from IMAP can result in an unpleasant Mail experience. Let me know your thoughts when you get a chance.Ĭheck your connected devices - Make sure your connected devices are all current and still in use. This can also save your battery and data usage. Create and use an app password - This is required if you've enabled Yahoo account key or two-step verification.Ĭheck for extra email address - An unverified email address can cause a 553 error when sending from a third-party app.Ĭheck your device’s settings - Ensure your device is manually pulling from the server versus automatically.