Let Me Know When

Let Me Know When monitors websites for changes such as price, stock, content, and design updates, then sends alerts by email or Slack. Marketing, SEO, and operations teams can use it to track their own sites and competitors.

Let Me Know When screenshot

Who it's for

  • Marketing and competitive-intelligence teams tracking competitor product, content, or design changes.
  • E-commerce teams monitoring product prices and restocks across websites.
  • Website owners or SEO teams checking site updates, uptime, or SEO metrics.

How it fits your workflow

Choose websites to monitor and configure monitoring settings. The service checks them at plan-specific frequencies and limits.

When it detects relevant changes, it sends notifications by email or, on Starter and Advanced plans, Slack. The AI assistant can analyze websites and provide actionable insights.

Pricing

Free: The page says users can get started for free and offers a free trial, but does not specify a separate ongoing free-tier plan.

Basic

$3.99/month

  • · Up to 10 websites
  • · 0 AI workflows
  • · 600 checks per month
  • · 2 checks per website per day

Starter

$9.99/month

  • · Up to 20 websites
  • · 1 AI workflow
  • · 2,400 checks per month
  • · 4 checks per website per day

Advanced

$19.99/month

  • · Up to 30 websites
  • · 5 AI workflows
  • · 5,400 checks per month
  • · 6 checks per website per day

Prices checked on Nov 8, 2026 from the vendor's site. They can change; confirm before you buy.

Key features

Website change monitoring
Track changes on monitored websites, including new content and other updates.
Price and stock alerts
Receive alerts when product prices change or out-of-stock items become available again.
Design change detection
Automatically detect and review design changes on monitored websites.
AI assistant and workflows
The AI assistant analyzes websites to provide actionable insights; plans include varying numbers of AI workflows.
SEO performance tracking
Monitor website SEO metrics to check how sites rank on search engines.
Specialized monitoring
The page lists monitoring for product launches, job postings, event tickets, crypto and stock prices, Google search trends, news, uptime, customer reviews, and software versions.

Works with

  • Slack

Limitations to know

  • The listed plans cap the number of monitored websites, monthly checks, checks per website per day, and AI workflows.
  • The Basic plan lists email notifications only; Slack notifications are listed for Starter and Advanced.

Alternatives to consider

  • Browse AI

    Choose it if you need no-code web data extraction and monitoring at scale with prebuilt robots and third-party integrations.

Compare Let Me Know When side by side

Getting started

  1. Sign up or select a plan on the website.
  2. Add the websites you want to monitor and configure monitoring settings.
  3. Choose an available notification channel and review alerts as they arrive.