# AWS User Notifications endpoints and quotas
<a name="notifications"></a>

To connect programmatically to an AWS service, you use an endpoint. AWS services offer the following endpoint types in some or all of the AWS Regions that the service supports: IPv4 endpoints, dual-stack endpoints, and FIPS endpoints. Some services provide global endpoints. For more information, see [AWS service endpoints](rande.md).

Service quotas, also referred to as limits, are the maximum number of service resources or operations for your AWS account. For more information, see [AWS service quotas](aws_service_limits.md).

The following are the service endpoints and service quotas for this service.

## Service endpoints
<a name="uno_region"></a>

[\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/general/latest/gr/notifications.html)

## AWS User Notifications Contacts endpoints
<a name="uno_contacts_region"></a>

[\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/general/latest/gr/notifications.html)

## Service quotas
<a name="quotas_notifications"></a>


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| Name | Default | Adjustable | Description | 
| --- | --- | --- | --- | 
| Notification configurations total for an AWS account | 50 notification configurations. | No | The maximum number of notification configurations that you can create in an AWS account. | 
| Notification configurations for a single Service | 20 notification configurations for any specific service for an AWS account. | No | The maximum number of notification configurations that you can create for a given service in an AWS account. | 
| Notification configurations per Service and Event type | 10 notification configurations for each service and event type for an AWS account. | No | The maximum number of notification configurations by Service and Event type you can create for a given AWS account. | 
| Event rules for a given notification configuration | 10 event rules | No | The maximum number of event rules that you can create for each notification configuration in your AWS account. | 
| Channels for a given notification configuration | 50 channels (email, mobile devices, or chat channels) for each notification configuration. | No | The maximum number of channels for each notification configuration that you can create in your AWS account. | 
| Email contacts | 500 email contacts for each AWS account. | No | The maximum number of email contacts that you can add for each AWS account. | 
| Notification hubs | 3 hubs for each AWS account. | No | The maximum number of notification hubs you can add to each AWS account. | 
| Rate of source events for a given AWS account | 1 per second. | No | The maximum number of source events per second you can receive in each AWS account. |