website down alerts
Website down alerts by SMS, email and Slack, the second your site fails
The point of a down alert is simple: know your site is down before your customers tell you. AlertPing checks your site every 30 seconds from three regions, confirms the outage is real, and sends a website down alert by SMS, email, Slack or webhook within seconds. No more finding out from an angry email or a drop in orders. Flat pricing from $19 a month.
Last updated July 2026 · SMS, email, Slack and webhook on every plan
alertping ▸ run check
live
▸ type a domain and run a real-feel check
▸ probes from 3 regions · FRA · IAD · SIN
▸ waiting…▌
queued probing▌
If ever goes down, you get:
Alert fired ▸ 2 channels · 6.2 s after first failure
AlertPing app
● DOWN : HTTP timeout confirmed from 3/3 regions (FRA, IAD, SIN). Incident opened.
sms · on-call
AlertPing: DOWN. Confirmed 3/3 regions . First fail: Frankfurt.
the reason
The first person to know should be you, not a customer
Most teams learn their site is down the worst way: a customer emails, sales pings you, or orders quietly stop. By then the outage has been running for an hour and the damage is done. A down alert closes that gap. The moment your site stops responding, the alert reaches your phone, so recovery starts in minutes instead of after the first complaint.
That only works if the alert is fast and trustworthy. An alert that takes five minutes to fire, or that cries wolf every time one region has a hiccup, trains you to ignore it. AlertPing checks every 30 seconds and confirms an outage from three separate regions before it pages you, so the alerts you get are worth acting on.
how you get told
Get the alert where you will actually see it
Different outages need different channels. A 3am database failure needs an SMS that wakes someone; a daytime blip is fine in Slack. Every channel below is included on every plan, with no separate credit balance to top up.
SMS
A text to your phone the second an outage is confirmed. The channel people actually notice out of hours, included on every plan.
A clear down alert with the failing check, the error and the time, so the responder has context before they open a laptop.
Slack
Alerts posted straight into the channel your team already watches, so the whole team sees the outage and the recovery together.
Webhook
A JSON payload to your own endpoint to trigger PagerDuty, a runbook, an auto-restart or anything else you have wired up.
how it works
From failure to alert in under a minute
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Step 1
Add your URL
Paste your website address and choose who gets alerted. Setup takes under a minute, no agent to install.
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Step 2
We check every 30s
AlertPing requests your site around the clock and watches for errors, timeouts and wrong responses, not just a dead connection.
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Step 3
Three regions confirm
Before paging you, checks from Virginia, Frankfurt and Singapore confirm the site is really down, not just unreachable from one place.
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Step 4
You get the alert
SMS, email, Slack or webhook fires within seconds, with the details you need to start fixing it right away.
alertping
Get a down alert before your customers do
AlertPing checks every 30 seconds from three regions and sends a website down alert by SMS, email, Slack or webhook the moment an outage is confirmed. SMS on every plan, flat from $19 a month.
what triggers an alert
More than just a site that will not load
A site can be broken while still technically responding. AlertPing alerts on the failures that matter, not just a dead connection.
| Failure | What the visitor sees | The alert you get |
|---|---|---|
| Server down or timing out | Spinning page, then an error | Down alert within 30 to 60 seconds |
| 500 or 503 error | An error page instead of the site | Alert on the wrong status code |
| Blank or broken page | A page that loads but is empty | Alert when an expected word is missing |
| Expired SSL certificate | A browser security warning | Advance warning before it expires |
| Slow response | A page that crawls | Alert when response time crosses your limit |
For the full picture of what continuous checks cover, see website monitoring, and for how the alerting itself works, see alerts and escalation.
questions
Website down alert questions, answered
How do I get an alert when my website goes down?
Use an uptime monitor that checks your site on a schedule and notifies you when a check fails. With AlertPing you add your URL, pick a channel like SMS, email or Slack, and the service checks the site every 30 seconds from three regions. When an outage is confirmed, the alert fires within seconds, so you hear about it before your customers do.
Can I get an SMS when my website goes down?
Yes. AlertPing sends a text message the moment an outage is confirmed, and SMS is included on every plan with no separate credit pack to buy. SMS is the channel most teams rely on out of hours, because it reaches a phone even when nobody is watching a dashboard or a Slack channel.
What is the best website down alert service?
The best service for you is the one that alerts fast, does not cry wolf, and reaches you on a channel you watch. Look for short check intervals, multi-region confirmation to cut false alarms, and SMS included rather than metered. AlertPing does all three at a flat price; compare the field on our best uptime monitoring tools roundup.
How fast will I be alerted?
AlertPing checks every 30 seconds on the Team plan and up, and 60 seconds on Starter, then confirms the outage from three regions before paging. In practice that means a down alert reaches you within roughly 30 to 90 seconds of your site failing, fast enough to start recovery before most visitors even notice.
Know the second your site goes down
30-second checks from three regions, then a down alert by SMS, email, Slack or webhook. SMS on every plan, flat from $19 a month.