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Slack alerts
when your
website goes down

We monitor that your website is reachableYour team gets instant Slack alerts when things break

No credit card required

Trusted by thousands of businesses

Setup Slack alerts when your website goes down in seconds

OnlineOrNot continuously monitors your website from multiple locations worldwide. The moment your site becomes unreachable, your team will receive instant Slack notifications so you can collaborate and take action immediately.

Keep your entire team in the loop with real-time alerts delivered directly to your Slack workspace.

Try OnlineOrNot now!

How to get Slack alerts when your website goes down:

Step 1

Sign up for free

Create your OnlineOrNot account in less than 30 seconds. No credit card required to get started.

Step 2

Connect your Slack workspace

Integrate OnlineOrNot with your Slack workspace using our simple one-click setup. Choose which channels or team members should receive alerts.

Step 3

Add your website and configure alerts

Enter your website URL, customize monitoring settings, and set up your Slack notification preferences. Your team will be instantly notified when issues occur.

Start a free trial

No credit card required.

Frequently asked questions

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People ❤️ OnlineOrNot

OnlineOrNot is built for scale and runs millions of uptime checks every week. Thousands of sites, startups and some of the world's leading brands have already made the switch from other uptime monitors.

Uptime Checks last week
11.3M
Users
3,747
Detected incidents last week
12,390

    • OnlineOrNot has been absolutely fantastic for my bot, Noti. It completely transformed the way I monitor online services.

      The real-time notifications keep me in the loop about any downtime, allowing me to take immediate action. If you're looking for a reliable way to monitor your project's status, I highly suggest using OnlineOrNot.

      Adam H
      Maker of Noti

    • Bet on indie hackers 🚀

      I tried @RozenMD's OnlineOrNot uptime monitoring, and for a few days got notifications of 2min down time.

      I thought that OnlineOrNot was wrong as Uptime Robot wasn't reporting anything.

      Turns out it was the other way around.

      Khaled Bentoumi
      Founder of Data to Page

    • We've been using OnlineOrNot and it has been a life saver.

      It, by far, has been one of the most responsive uptime services we've tried and it only gets better and better as time goes on.

      Alex Bowles
      Founder of Casterlabs

    • I just set up some site aliveness checks for @Archium_io with @RozenMD's OnlineOrNot.

      Took me less than five minutes and it was completely self-explanatory, not to mention gorgeous. Seriously good experience.

      Great job, Max! 👏👏

      Graham Lea
      Founder of Archium.io

    • OnlineOrNot by @RozenMD is all one needs

      It is easy to set up and very reliable. I have been using it for almost an year now.

      Rajat Saxena
      Founder of CourseLit

    • I'm using OnlineOrNot to monitor my @cloakist customers' sites, so I can respond quickly if they stop working

      Love it. Super clean interface, very intuitive. Particularly impressed at how it can wait for full page load

      Thanks @RozenMD for making this awesome tool!

      Louis Barclay
      Founder of Cloakist

    • OnlineOrNot does the job for me.

      Charles Miller
      Software Architect at Atlassian
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