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How to set up email, Slack and webhook alerts
Choose how big a change has to be before Rival Radar emails you, and send the same digest to a Slack or Discord channel.
Updated November 9, 2026
Watch how, in a short video
Alerts arrive as a digest rather than one email per change, so a competitor rewriting four pages in an afternoon is one email, not four.
The one setting that matters is the severity threshold: how big a change has to be before it's worth your inbox.
Step by step
Open the notifications page
Settings, then Manage notifications.
Make sure email is on
Email me about changes is on by default. Turning it off stops change digests reaching you, and leaves everything in the dashboard.
Pick a threshold
Minimum severity has three settings: Every change, Notable and major changes, and Major changes only. The middle one is the default.
Add a channel, if you want one
Paste an incoming webhook address into Slack or webhook URL (optional). It works with Slack, Discord, or anything that accepts JSON.
Test it
Press Send test beside the box. A test post goes to the channel straight away, so you find out now rather than on the day something matters.
Decide about feature update emails
Feature update emails is a separate switch, for the occasional email when we ship something. Nothing to do with your competitors.
Save
Press Save preferences.
Choosing a threshold
- Every change, including minor wording tweaks. Use it for a week to get a feel for how much a competitor really moves, then turn it down.
- Notable and major changes, skipping minor tweaks. The default, and the right answer for nearly everyone.
- Major changes only, which in practice means pricing changes and the like. Use it when you watch a lot of competitors and only want the ones that change a deal.
Nothing is lost at a higher threshold. Everything is still recorded and still in the dashboard; the threshold only decides what's worth an email.
A price or percentage changing on a page you've marked Pricing is always at least Major, so it reaches you whatever your threshold. See reading a detected change.
How the digest works
Rival Radar sweeps for pages that are due once an hour. The changes found in a sweep go out as one digest per person, so you get at most one change email an hour and usually far fewer.
A webhook, if you've set one, gets the same digest at the same time. You can use both, or just the channel: turn Email me about changes off and leave the webhook in place.
Setting up the webhook
- In Slack, create an incoming webhook for the channel you want and copy its address. In Discord, use the channel's own Integrations settings to create one.
- Paste it into Slack or webhook URL (optional).
- Press Send test and check the channel.
- Press Save preferences.
Anything else that accepts a JSON POST works too, which is the way to get alerts into a tool of your own.
Questions
Will I get an email for every change?
No. Changes found in the same hourly sweep are batched into one digest, and anything below your severity threshold is left out of it.
Will I be told when a watched page stops working?
No. Alerts are for changes a competitor made, not for our own plumbing. The Need attention tile on the dashboard covers that, and when a page stops checking explains it.
Can I get alerts for one competitor only?
Not per competitor. The threshold is account-wide. The practical way to cut noise from a busy competitor is to watch fewer of their pages, or to watch the pages that move less.
How do I stop the emails entirely?
Turn off Email me about changes, or use the unsubscribe link at the bottom of any digest. Feature update emails have their own switch and their own unsubscribe link.
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