# The best ad alert tools > Ad alert tools that flag when spend or results go wrong: Opteo, Birch, Optmyzr, Google Ads scripts, Meta rules and Marxx. Prices checked 6 Nov 2026. - **Author**: Marxx - **Published**: 2026-11-06 - **Category**: Ad management - **URL**: https://marxx.ai/library-best/best-ad-alert-tools --- For Google Ads alone, Opteo is the most focused alert tool, and Google Ads scripts cost nothing extra. For Meta, start with Meta's own automated rules, then add Birch or Optmyzr when you need alerts across several platforms in Slack. ## Quick comparison | Tool | Platforms | Where alerts go | Starting price | |---|---|---|---| | Opteo | Google Ads | Slack, one channel or one per account | Basic $129/month | | Birch | Meta, Google, Snapchat, TikTok | Slack on Essential and Pro | Essential $49/month | | Optmyzr | Google, Microsoft, Amazon, Meta, LinkedIn, TikTok | Slack, Microsoft Teams, Zapier | See optmyzr.com/pricing | | Google Ads scripts | Google Ads | Email, or Slack through a webhook | Part of Google Ads | | Meta automated rules | Meta | Notification or email | Part of Ads Manager | | Marxx | Meta. Ask us about Google Ads | Slack or email, with snooze | See [Marxx pricing](/pricing) | Prices from each company's own pricing page (checked 6 Nov 2026). ## Opteo Opteo sends six kinds of Google Ads alert to Slack: Unexpected Changes, Zero Impressions, Zero Conversions, Budget, Performance Records and New Improvements. You can send them to one team channel or give each account its own. Basic is $129 a month for 10 accounts and up to $25,000 of spend. There is a 14-day trial. ## Birch Birch, formerly Revealbot, checks your rules every 15 minutes and lists 20+ actions. It covers Meta, Google, Snapchat and TikTok, and its Slack integration comes with Essential and Pro. Essential is $49 a month, or $540 billed yearly, and the price depends on ad spend. The 14-day trial needs no card. ## Optmyzr Optmyzr covers the widest set of platforms here, with KPI and performance alerts. It connects to Slack, Microsoft Teams and Zapier. It says "No changes without your approval, ever." Its plan prices were not in a form we could read, so check optmyzr.com/pricing. There is a 14-day trial. ## Google Ads scripts A script is a short piece of code that runs on a timer inside Google Ads. It can check a number, such as yesterday's cost per conversion, and email you or post to a Slack incoming webhook when it crosses your limit. Slack asks apps to post no more than one message a second per channel. You need someone comfortable editing code. ## Meta automated rules Meta's automated rules live in Ads Manager. A rule can send you a notification or email when its conditions are met, without touching the ad. That is a safe first alert for any Meta advertiser. It covers Meta only. ## Marxx We make Marxx. You set alerts as conditions on metrics with a severity, sent to Slack or email. In Slack, anyone can press **Snooze 7 days** or **Turn off this alert**, and the message shows who did it. See [how to set up Meta ads alerts in Slack](/guides/how-to-set-up-meta-ads-alerts-in-slack). ## Set the threshold first An alert is only as good as its number. Say your target cost per lead is INR 400. 1. Pick a level you will act on: 1.5 x INR 400 = INR 600. 2. Pick a window long enough to ignore one bad day: the last 3 days. 3. Write the rule: alert when cost per result is above INR 600 over the last 3 days. If an ad set spends INR 4,200 for 6 leads in 3 days, its cost per lead is INR 700. The alert fires. If it spends INR 4,200 for 9 leads, the cost is about INR 467, and the alert stays quiet. For what to do next, read [how to lower CPA on Meta ads](/guides/how-to-lower-cpa-on-meta-ads). ## How to choose 1. **Which platforms?** Google only points to Opteo or scripts. Several platforms point to Birch or Optmyzr. 2. **Where does your team read?** Pick a tool that posts where people already look. 3. **Too many alerts?** Start with three rules. Add more only when you act on every one. ## FAQ ### Are there free ad alert tools? Meta's automated rules and Google Ads scripts come with the ad platforms at no extra charge. Opteo and Birch each offer a 14-day trial (checked 6 Nov 2026). ### Which ad alert tools post to Slack? Opteo, Birch (on Essential and Pro) and Optmyzr list Slack. A Google Ads script can post through a Slack incoming webhook. ### How many alerts should I set? Start with a few you will act on, such as high cost per result, spend with no results and a falling click-through rate. Too many alerts teach people to ignore them. --- - [More Ad management articles](https://marxx.ai/library-best/category/ad-management) - [All articles](https://marxx.ai/library-best)