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Countly is a privacy-first, AI-powered analytics and engagement platform for understanding and optimizing customer journeys across digital applications, from desktop and mobile to IoT and connected environments.
A Node.js module for sending notifications on native Mac, Windows and Linux (or Growl as fallback)
All in one email sender for .NET. Supports popular senders (SendGrid, MailGun, etc) and Razor templates.
The easy way to send notifications
Open-source, self-hosted newsletter, email marketing and transactional email platform. Visual MJML editor, Liquid templating, 7 sending providers.
Open-source self-hosted email marketing. Manage your own newsletters at a fraction of the cost.
Django email backends and webhooks for Amazon SES, Brevo, MailerSend, Mailgun, Mailjet, Mailtrap, Postmark, Postal, Resend, Scaleway TEM, SendGrid, SparkPost, Unisender Go and more
A Java library for sending APNs (iOS/macOS/Safari) push notifications
Keep your email safe from hackers and trackers. Make an email alias with 1 click, and keep your address to yourself.
Notification library for gophers and their furry friends.
This is a simple proxy server that can be used for sending free transactional emails through Cloudflare workers.
OneSignal makes engaging customers simple and is the fastest, most reliable service to send push notifications, in-app messages, SMS, and emails. This plugin makes it easy to integrate your React Native app with OneSignal. https://onesignal.com
The classic email sending library for PHP - this is my personal fork, please post issues on the upstream project
Simple API, Complex Emails (Jakarta Mail smtp wrapper)
A tiny, self-hosted notification inbox for developers. Something happened in one of your apps; Boop tells you on your phone.
Golang package for send email. Support keep alive connection, TLS and SSL. Easy for bulk SMTP.
Mailman provides a clean way of defining mailers in your Elixir applications
Strongly typed library for the entire SendGrid v3 API, including webhooks
Friendly library to push and receive instant notifications using ntfy.sh servers in Delphi
Firebase Cloud Messaging for application servers implemented using the Go programming language.
SparkPost client library for Elixir https://developers.sparkpost.com
Desktop & phone notifications for AI coding agents (Claude Code, Codex, Gemini CLI, Cursor). Native VS Code support. Toast + ntfy push. Zero dependencies.
Google Cloud Messaging for application servers implemented using the Go programming language.
A simple & highly extendable, meta-notification system; Echo checks notification preferences & dispatch notifications to different adapters (ex. email, logger, analytics, sms, etc.).