Carillon

Quick answer: Carillon provides push notifications for iOS and Android with a full delivery trace on every notification. It is hosted in the EU, includes a DPA on every plan, and follows a GDPR-by-default approach. It suits app developers and teams that need EU-hosted push infrastructure and delivery visibility.

Listed 2026-08-28 · Request removal

Definition: Carillon is a developer tool for sending push notifications to iOS and Android applications. It provides a delivery trace for each notification and is hosted in Europe, with a data processing agreement included on every plan for teams building GDPR-ready apps.

What is Carillon used for?

Carillon is a push notification platform for mobile application developers. Its stated purpose is to help teams send notifications to users of iOS and Android apps while providing visibility into notification delivery. Push notifications can be an important communication channel for apps that need to alert users outside the application itself.

The product is positioned for organizations that want mobile push infrastructure alongside European hosting and a GDPR-by-default approach. Rather than describing a broad messaging suite, the available product information centers on the core job of delivering mobile push notifications and tracing what happens to each notification.

Carillon is operated by Exostack SARL. Teams evaluating the product can visit the official Carillon website for current implementation details and service information.

Which mobile platforms does Carillon support?

Carillon supports push notifications for both iOS and Android. This makes it relevant to teams maintaining an app on one mobile operating system or distributing the same app across both major platforms.

For an iOS app, Carillon can be used to send iOS push notifications. For an Android app, it can be used to send Android push notifications. A team with both apps can assess Carillon as a single product for its mobile notification needs across those two supported platforms.

The supplied product information does not identify support for web push, desktop operating systems, messaging channels such as email or SMS, or additional mobile platforms. Buyers needing those channels should confirm their requirements directly with Carillon before choosing a provider.

How does Carillon provide notification delivery visibility?

Carillon states that every notification includes a full delivery trace. This is one of the product's main distinguishing capabilities in the supplied information. Delivery tracing gives developers and app teams a way to review the delivery path or delivery-related record for an individual notification rather than treating notification sending as an opaque process.

For teams that need to track notification delivery, this capability can support operational investigation. When a push notification is important to an app workflow, delivery visibility can help a team examine the outcome associated with that notification. Carillon specifically presents the trace as available on every notification.

The available facts do not define the exact events, timestamps, retention periods, dashboard views, export options, alerts, or technical APIs included in a delivery trace. They also do not state that a trace proves a recipient opened, read, or acted on a notification. Organizations should distinguish delivery tracing from engagement analytics unless Carillon confirms that such analytics are available.

Where is Carillon hosted and how does it address GDPR needs?

Carillon is hosted in Europe, also described as EU hosting. This is a central consideration for teams that want their push notification infrastructure and associated data stored in the EU. The product lists storing data in the EU as a use case.

Carillon also states that it follows a GDPR-by-default approach. In addition, a data processing agreement, or DPA, is included on every plan. A DPA is often relevant when an organization uses a service provider to process personal data on its behalf and needs contractual terms covering that processing relationship.

These characteristics make Carillon relevant to organizations with GDPR requirements, as well as teams that have internal preferences or contractual obligations around European hosting. The inclusion of a DPA on every plan means this agreement is presented as part of the offering rather than as an item restricted to a particular plan.

EU hosting and a DPA can be meaningful components of a privacy and compliance program, but they do not by themselves establish that any specific application's complete data handling is compliant. Each organization remains responsible for evaluating its own legal basis, user disclosures, configuration, vendor review process, security practices, and applicable obligations. Teams should review Carillon's current contractual and privacy documentation for their particular use case.

Who should consider Carillon for mobile push notifications?

Carillon is aimed at app developers and teams that need infrastructure for iOS and Android push notifications. It may be especially relevant when delivery traces are needed as part of operating or reviewing mobile notification activity.

The product is also suited to teams seeking EU-hosted push infrastructure. This can include organizations that prefer European data storage or need to assess vendors through a GDPR-focused procurement process. The DPA included on every plan may be useful for teams that expect to need a processing agreement as part of their vendor documentation.

Typical evaluation questions for a prospective Carillon user include whether the application targets iOS, Android, or both; whether per-notification delivery tracing is a requirement; and whether EU hosting is necessary for the organization's data governance approach. These are all areas directly reflected in Carillon's stated product scope.

What should teams evaluate before adopting Carillon?

Teams should begin by confirming that Carillon's iOS and Android support matches their application architecture and notification requirements. The supplied information establishes support for mobile push notifications on those platforms, but it does not provide details about software development kits, APIs, setup steps, authentication methods, migration tools, rate limits, or development environments.

It is also sensible to clarify how delivery traces are accessed and interpreted. A team may want to ask what trace information is available, how long it is retained, whether it can be searched or exported, and which delivery states are recorded. Those implementation questions matter when traces will be used for support, operations, audit work, or internal reporting.

For privacy reviews, organizations can ask for current details on EU hosting, the DPA, subprocessor arrangements, and the product's treatment of notification-related data. This is particularly important where the application sends information that could be personal data. Carillon's GDPR-by-default positioning and included DPA are relevant starting points, while a buyer's own requirements may call for more specific review.

What are Carillon's limitations based on the available information?

The available information is focused and does not list pricing, a free plan, integrations, alternatives, or additional communication channels. No price, trial availability, or plan comparison is provided. Prospective users should therefore consult Carillon directly for current commercial terms.

There is also no stated information about web push notifications, email, SMS, audience segmentation, campaign scheduling, personalization, analytics, automation, or third-party integrations. Their absence from the supplied facts should not be read as confirmation that they are unavailable, but neither should they be assumed to be included.

Finally, the product description does not specify the technical detail behind its delivery traces or the exact compliance controls available to customers. Carillon clearly states EU hosting, GDPR by default, and a DPA on every plan, but organizations with detailed technical, security, or regulatory requirements should validate the current service documentation before deployment.

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FAQ

What is Carillon?

Carillon is a mobile push notification platform for iOS and Android apps. It provides a full delivery trace for every notification and is hosted in Europe.

Does Carillon support both iOS and Android notifications?

Yes. Carillon is designed to send push notifications to both iOS and Android applications.

Does Carillon include a DPA?

Yes. Carillon states that a data processing agreement is included on every plan.

Can Carillon help teams track notification delivery?

Carillon provides a full delivery trace on every notification. The available information does not specify the individual delivery events included in that trace.

What is a push notification platform?

A push notification platform is a service developers use to send alerts from an app to a user's device. Carillon is a push notification platform focused on iOS and Android delivery.

Why does EU hosting matter for push notifications?

EU hosting can matter to organizations with data location preferences or GDPR-related vendor requirements. Carillon is hosted in Europe and positions its service for GDPR-ready apps.

What should developers look for in a mobile push notification service?

Developers commonly assess platform support, delivery visibility, data hosting, and contractual privacy terms. Carillon offers iOS and Android support, notification delivery traces, EU hosting, and a DPA on every plan.