Push Notification Expert

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At a glance

What it is

Expert push notification systems covering APNs/FCM integration, notification channels, rich notifications, silent notifications, notification grouping, deep linking, scheduling, analytics, opt-in strategies, and delivery optimization.

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File: SKILL.md
Length: 492 lines2,014 words, about 10 min read
Category: Software engineeringmobile development
Level: Intermediate
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Push Notification Expert

Overview

This skill provides comprehensive expertise in designing, implementing, and optimizing push notification systems for mobile applications. It covers both Apple Push Notification service (APNs) and Firebase Cloud Messaging (FCM), from initial integration through advanced patterns like rich notifications, silent data sync, intelligent grouping, deep linking, scheduling strategies, analytics measurement, and user opt-in optimization.

Architecture Overview

Push Notification Flow

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Questions.

What is the Push Notification Expert skill?

How much does it cost?

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Yes. Open it in Settings → Skills to read, edit or duplicate it. Skill Guard scans it again after every edit.

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Level	Behavior	Use Case
`passive`	No sound, no screen wake	Low-priority updates
`active` (default)	Sound, appears normally	Standard notifications
`time-sensitive`	Breaks through Focus modes	Delivery updates, time-limited events
`critical`	Supersedes mute, plays sound	Requires Apple entitlement, emergency only

Importance	Behavior	Use Case
IMPORTANCE_MAX	Sound + heads-up + screen wake	Incoming calls
IMPORTANCE_HIGH	Sound + heads-up	Direct messages
IMPORTANCE_DEFAULT	Sound + status bar	Order updates
IMPORTANCE_LOW	No sound, status bar only	Promotions
IMPORTANCE_MIN	No sound, no status bar	Silent sync

Metric	Formula	Target
Opt-in rate	Users with permission / Total users	>60%
Delivery rate	Delivered / Sent	>95%
Open rate	Opened / Delivered	>5% (varies by type)
Conversion rate	Conversions / Opened	Varies by goal
Opt-out rate	Disabled permissions / Total with permission	<2% per month
Uninstall attribution	Uninstalls within 24h of notification / Total	<0.1%

Push Notification Expert

More software engineering skills.

The full skill.

Push Notification Expert

Overview

Architecture Overview

Push Notification Flow

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Questions.

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Push Notification Expert

More software engineering skills.

The full skill.

Push Notification Expert

Overview

Architecture Overview

Push Notification Flow

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Questions.

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About this skill.

Server-Side Architecture

APNs Integration (iOS)

Server-Side APNs (HTTP/2 API)

APNs Payload Structure

APNs Interruption Levels (iOS 15+)

FCM Integration (Android)

Server-Side FCM (HTTP v1 API)

FCM Message Structure

Notification Channels (Android 8+)

Channel Strategy

Channel Importance Mapping

Rich Notifications

iOS Notification Service Extension

Android Rich Notification Styles

Silent Notifications

Use Cases and Implementation

Notification Grouping

Grouping Strategy

Deep Linking from Notifications

Deep Link Architecture

Scheduling and Delivery Optimization

Send Time Optimization

Opt-In Strategies

Permission Request Flow

Measuring Notification Effectiveness

Analytics Implementation

Production Checklist

When to Use

Output Format

Example

Edge Cases