Both platforms send fewer alerts than people assume, and they are thin in exactly the same places.
Vercel#
| Alert | Channels | Tier |
|---|---|---|
| Deployment created / ready / error / canceled | Web, email, Slack, webhook | All |
| Domain configuration issues | Web, email | All |
| Spend amount at 50% / 75% | Web, email | Pro+ |
| Spend amount at 100% | Web, email, SMS | Pro+ |
| Usage approaching plan limits | Web, email | Varies |
| Integration and Marketplace events | Web, email | All |
Deploy alerts are good. Fast, multi-channel, webhook-able. If you want to know a build broke, Vercel has you covered.
Usage alerts are the thin part. Three fixed percentages, Pro and above only, of an amount you nominate. SMS at 100% is the only channel likely to wake anyone, and by then you are at 100%.
Netlify#
| Alert | Channels | Tier |
|---|---|---|
| Deploy started / succeeded / failed | Email, Slack, webhook | All |
| Deploy locked / unlocked | Email, Slack | All |
| Form submission | Email, Slack, webhook | All |
| Usage at 50% / 75% / 100% | Email, in-app | All |
| Split test events | Paid |
Netlify's deploy alerts are comparable to Vercel's, and its usage emails are not paywalled — a Netlify free user is better informed than a Vercel Hobby user, who gets nothing.
But there is no spend concept at all. No amount to nominate, no pause. Just the three emails against your plan allowance. Netlify's own observability docs suggest a third-party log drain if you want real alerting.
The four neither platform sends#
1. An alert at a threshold you chose. Both are hardcoded to 50/75/100%. If your traffic pattern makes 75% and 100% four hours apart, that is your entire warning window. See custom percentage alerts.
2. A push notification. Neither has a mobile app, so neither can send one. The options are email, an in-app banner you have to be in the app to see, Slack, or Vercel's SMS at 100%. Email is not a page.
3. Anything about the other provider. Obvious, but it means running both providers means running two alerting setups with different thresholds, different channels and different tiers.
4. An alert you can act on. Every alert here is informational. You are told, and then you go and find a laptop. Nothing offered by either platform lets you stop it from the notification.
What people build instead#
- A cron polling the API. Vercel has had a billing API since February 2026; Netlify exposes account bandwidth. See the Netlify script. Works, but it needs somewhere to run and a long-lived token sitting there, and Slack at 3am is still not a page.
- A log drain into a monitoring tool. What Netlify officially recommends. Powerful, and a real setup cost.
- A third-party monitor. Which is what MONII is, so weigh accordingly.
MONII covers exactly the four gaps above: any threshold you choose, pushed to your phone, across both providers, with a kill switch attached to the notification.
It does not replace deploy notifications — Vercel's and Netlify's are good, they are free, and you should leave them on. And MONII's ~15-minute poll is slower than Vercel's own check, so on Pro you want both.
Questions people actually ask
Does Vercel send deployment notifications?
Yes — deployment created, ready, error and canceled, via web, email, Slack and webhooks. Deploy notifications are well covered on both platforms; usage notifications are the thin part.
Does Netlify have usage alerts?
Only fixed emails and in-app notifications at 50%, 75% and 100%. There is no custom threshold and no spend cap.
Can either platform push to my phone?
Neither has a mobile app, so neither sends a native push. Vercel sends SMS at 100% of a spend amount on Pro, which is the closest thing available.
The four they do not send
MONII covers custom thresholds, push to your phone, both providers in one place, and an alert you can act on.
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