Learn about the limits that apply to creating and sending push notifications to users of your app.
Message Size and Length Limits
The Push Notification Providers (PNSs), such as Apple Push Notification Service (APNs) and Google’s Firebase Cloud Messaging (FCM), enforce limits related to mobile push messages.
| Resource | Maximum | Details |
|---|---|---|
| Maximum message payload size | 4,096 bytes |
This limit applies only to push notifications, but not to in-app messages or app inbox messaging. |