Courier alternatives

Pusher empowers developers with APIs to create collaboration & communication features in their web and mobile apps.Our APIs and libraries help you add interactive features in minutes. Service updates @PusherStatus

Increase your user engagement over Web and Mobile browser through PWA Push Notifications. Live with 25k+ global brands—5 star rated with all browsers support.

SuprSend is a notification infrastructure to build and manage product notifications across all channels. With SuprSend API and dashboard, developers and product owners can ship cross-channel notifications fast, iterate on them quickly and scale easily.

Knock is a flexible API and dashboard for powering delightful product notification experiences. It helps you ship faster, iterate on your product messaging, and scale your notifications for the long-term. We built product notifications so you don’t have to.

Drive engagement, retention and revenues by owning your audience with iZooto - World's first owned audience marketing platform built for publishers.

Universal API client to call any API in 2 minutes, Monitoring platform to manage all your integrations. Monitor API usage across your source code. Detect anomalies and remediate issues.

PushOwl helps keep website visitors engaged even after they have left the website, by sending the right message to the right people at the right time.

OneSignal is the market-leading customer messaging and engagement solution, offering mobile and web push notifications, in-app messaging, SMS, and email. Our powerful omnichannel platform enables 1M+ businesses to deliver over 10B+ messages daily. Powered by superior architecture, OneSignal is designed to scale with your business and deliver messages more quickly and reliably than the competition.

CleverPush is a web push notifications service from Germany. We care about GDPR and provide features like opt-in design and notification split-testing and a REST API. Many big publishers already use CleverPush to increase their ad revenue with click rates up to 20%.

Never have an IP-whitelisting related outage again: ✅ Monitor unlimited URLs and IP addresses ✅ Weekly or every-minute monitoring ✅ Automatic updates for firewall rules in AWS, Azure, or GCP ✅ Notifications by email, webhook, Slack, or Discord

Pingtumi is a mobile broadcast messaging service that enables any business, organization or individual to message large groups using push notifications.