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Email alerts
when your
SSL certificate expires

We check SSL certificates during uptime monitoringYou get email alerts when SSL certificates expire

Free 14-day trial · No credit card required

Trusted by thousands of businesses

Setup email alerts when your SSL certificates expire in seconds

OnlineOrNot checks SSL certificates as part of uptime monitoring. When you enable SSL certificate verification, we detect when certificates have expired, become invalid, or have SSL connection problems during each website check and send email notifications when these issues occur.

Perfect for staying informed when SSL certificates expire or have problems that could damage user trust, hurt SEO rankings, and cause browser security warnings that drive visitors away from your site.

Try OnlineOrNot now!

How to get email alerts when your SSL certificates expire:

Step 1

Sign up for free

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

Step 2

Enable SSL certificate verification

Add your website URLs for uptime monitoring and enable SSL certificate verification. We'll check for SSL certificate expiration during each uptime check every 30 seconds.

Step 3

Get instant email alerts

Receive email notifications when SSL certificates expire or have issues during uptime monitoring. Add team members to ensure multiple people are notified about SSL certificate problems.

No credit card required.

Frequently asked questions

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Trusted by software teams worldwide

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

Uptime Checks last week: 11.8M
Users: 4,164
Detected incidents last week: 775

- 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