> ## Documentation Index
> Fetch the complete documentation index at: https://docs.daftplug.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Notifications

> Email alerts when your Core Web Vitals score changes grade.

**Lightify > Settings > Notifications**

## Performance alerts

<ParamField path="Score Alerts" type="toggle" default="off">
  Emails you when your Core Web Vitals score moves between grades, in either direction.
</ParamField>

<ParamField path="Email Address" type="email">
  Where alerts go. Defaults to your WordPress admin email.
</ParamField>

## When an alert fires

Lightify grades your score into three bands, and an email is sent when the grade changes, not on every fluctuation.

| Grade   | Score        |
| ------- | ------------ |
| Good    | 90 and above |
| Average | 50 to 89     |
| Poor    | Below 50     |

A site drifting from 92 to 91 sends nothing. A site dropping from 91 to 88 sends one email, because it crossed from good to average.

<Note>
  At least three visitor measurements are needed before any alert is considered. A quiet site, or one that has just installed Lightify, will not send alerts until it has collected enough real data.
</Note>

Alerts go both ways. You are told when performance degrades, and told again when it recovers, which is what makes the feature useful after a change rather than only as a warning.

## Why this is worth turning on

Performance decays quietly. Nobody notices the day a new plugin adds a render-blocking script, or the day a marketing tag starts loading a video player on every page. The score drops, and you find out weeks later.

Because Lightify measures your actual visitors rather than running a synthetic test, the alert reflects something people genuinely experienced.

<Tip>
  Send alerts somewhere a person will read them. A shared inbox nobody opens is the usual reason an alert about a real regression goes unnoticed for a month.
</Tip>

## Customizing the email

All four parts of the message are filterable, each receiving the old and new grades and scores:

| Filter                            | Controls         |
| --------------------------------- | ---------------- |
| `lightify_score_alerts_recipient` | Where it is sent |
| `lightify_score_alerts_subject`   | The subject line |
| `lightify_score_alerts_body`      | The body         |
| `lightify_score_alerts_headers`   | The mail headers |

Routing alerts into Slack, a ticketing system, or an on-call tool is a few lines. See [score alert filters](/lightify/reference/hooks#score-alerts).

<Card title="How the score is calculated" icon="gauge-high" horizontal href="/lightify/guides/measuring-performance">
  What the metrics mean and why this number disagrees with PageSpeed Insights.
</Card>