Is Yahoo Mail down right now?

Yes. HostTracker lets you add any URL - including third-party services you depend on, not just your own website - as a monitored target, and notifies you automatically the moment it becomes unreachable. Before sending an alert, HostTracker re-verifies a failure from multiple locations in its 300+-location network, so you're notified about real, confirmed outages rather than a single location's momentary blip. The free plan checks two monitors every 30 minutes indefinitely at no cost; paid plans check as often as once a minute, with alerts available through SMS, email, voice call, and several messenger apps.

No - if the website works, the service is up, and the fault is in the connection your mail app is making. The most common cause is authentication: Yahoo requires a generated app password for third-party clients rather than your normal account password, and a client configured before that requirement, or after a password change, will fail to sign in while the browser keeps working. Regenerating the app password and re-entering it in the client resolves most of these. Genuine outages fail the website too, which the multi-location check on this page will confirm in seconds.

Reading and sending use different systems, so one failing alone is a real and fairly common pattern. Outbound mail depends on the sending service and its anti-abuse checks, both of which can fail or throttle independently of the mailbox you are reading from. If the message sits in the outbox or returns a generic failure, wait and retry rather than resending repeatedly, which can trip rate limits and make things worse. If it bounces with a specific reason - a rejected recipient, a size limit, a blocked attachment type - that is not an outage but a delivery rule, and the bounce text names the cause.