Engineering Blog

Feb 6, 2026

A2P 10DLC Registration: The Ultimate Developer's Guide (2026)

A practical guide to A2P 10DLC for developers at SaaS or startup companies wanting to send SMS notifications. Step-by-step instructions and Twilio setup included.

22 min read

Sep 10, 2025

Flutter Push Notifications: iOS, Android, Web (Part 2: iOS)

Learn how to implement push notifications in your Flutter iOS app using NotificationAPI and Apple Push Notification service (APNs). Practical, step-by-step guide based on a real device walkthrough.

14 min read

Jul 11, 2025

Fix awstrack Links Blocking SES Email Notifications (2025)

This article covers how to fix tracking links, pixels, and image content from AWS SES emails being blocked by corporate firewalls and ad blockers.

6 min read

Jun 5, 2025

Flutter Push Notifications: iOS, Android, Web (Part 1: Android)

Learn how to implement push notifications in your Flutter Android app using NotificationAPI and Firebase Cloud Messaging. Step-by-step tutorial with code examples.

12 min read

Jun 1, 2025

Twilio Alternatives for SMS Messaging in United States (2025)

Comprehensive comparison of top Twilio alternatives for US developers including NotificationAPI, MessageBird, and Plivo. Compare A2P 10DLC compliance, US carrier costs, and developer experience.

12 min read

May 29, 2025

Push Notification APIs Compared for Developers (June 2025)

A comprehensive technical comparison of leading push notification services including OneSignal, NotificationAPI, Firebase, and Airship, focusing on developer experience, pricing, features, and scalability.

14 min read

May 28, 2025

Easy and Cost-Effective Transactional Email APIs Compared (2025)

A comprehensive technical comparison of leading transactional email services including NotificationAPI, SendGrid, Resend, Amazon SES, Postmark, and Mailgun, focusing on developer experience, pricing, and features.

12 min read

May 27, 2025

Free and Paid SMS Notification APIs for US & Canadian Developers (2025)

A comprehensive technical comparison of leading SMS notification APIs including NotificationAPI, Twilio, MessageBird, and Plivo, focusing on developer experience, pricing, and features for US & Canadian users.

15 min read

May 22, 2025

Java: Send SMS and Email Notifications with NotificationAPI

Learn how to send SMS and email notifications in your Java application using NotificationAPI. Includes setup, code samples, and security best practices.

8 min read

May 9, 2025

Lovable: Send SMS and Email Notifications from Lovable.dev

Learn how to implement secure SMS and email notifications in your Lovable.dev application using NotificationAPI and Supabase edge functions.

8 min read

Mar 11, 2025

Email Deliverability Best Practices | A Developer's Guide to Avoiding the Spam Folder

A technical guide designed for software developers, including technical requirements and best practices ensuring product-to-user emails reach the inbox.

6 min read

Feb 21, 2025

Auth.js Email 2FA Implementation Guide | Code samples (2025)

This guide shows you how to implement email-based 2FA that's maintainable and secure.

9 min read

Feb 19, 2025

Auth.js Magic Link: Custom Email Provider + Code Samples (2025)

Learn how to use a custom email provider for sending Auth.js magic link emails. Step by step guide with code examples for Node.js, Next.js and TypeScript.

8 min read

Feb 11, 2025

Send Custom Notifications from Supabase - With Example (2025)

Send custom Email, SMS, In-App and other types of notifications from Supabase with one library. Including code example using TypeScript and Supabase Edge Functions.

12 min read

Feb 4, 2025

Courier Alternatives - Top 3 Competitors (With Comparisons)

In this article, we discuss three respectable alternatives to Courier as your 3rd party notification service to weigh against, along with a comparison table.

15 min read

Feb 4, 2025

Knock Alternative: NotificationAPI - In-Depth Comparison (2025)

NotificationAPI is a Knock alternative, with many differences in how they manage third-parties, notification workflows, pricing, and support. Learn more here!

5 min read

Feb 4, 2025

Knock Alternatives - Top 3 Competitors (With Comparisons)

In this article, we discuss Knock's notification features & shortcomings and provide three respectable alternatives with comparisons.

15 min read

Aug 10, 2024

Hidden Scalability Bottlenecks In User Notifications

This article covers the not-so-obvious bottlenecks that cause scalability issues in the Notification Service of your software, along with easy-to-implement remedies.

10 min read

Jul 25, 2024

Building a Notification Service: Top Technical Mistakes

Sending product-to-user notifications looks easy. But this blog post lists software teams' critical technical mistakes when implementing their notification service.

12 min read

Jul 25, 2024

Notification Service Design | The Ultimate Guide with Diagrams

The essentials for designing a full-featured Notification System to send product-to-user notifications at scale for less. Compatible with AWS, Azure, and GCP.

22 min read

Jul 25, 2024

Serverless Notification Service Design in AWS - with diagrams

In this article, we design a fully Serverless Notification Service using AWS to send product-to-user notifications. Fully scalable, extensible, with minimal cost.

12 min read

Jul 25, 2024

Top Non-Technical Mistakes With Your Notification Service

This article discusses the common mistakes that engineers make when building their own notification service; Mistakes that are easy to resolve with a little help.

12 min read

Jul 25, 2024

Ultimate Guide on Notification Services - A Technical Overview (2024)

Do you need a 3rd-party notification service? In this article, we review the challenges of a typical notification project and review the viable solutions.

15 min read

Feb 5, 2024

The Developer's Guide to Google Bulk Sender Requirements

A step-by-step technical guide for developers and SaaS companies that want their email notifications to comply with Google's and Yahoo's new bulk sender policies.

17 min read

Jun 8, 2022

How to prevent AWS SES review and suspension

Developers may find their AWS SES account banned even if they never sent any spam. Follow these best practices to prevent your SES from being reviewed and suspended.

18 min read

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Engineering

A2P 10DLC Registration: The Ultimate Developer's Guide (2026)

Flutter Push Notifications: iOS, Android, Web (Part 2: iOS)

Fix awstrack Links Blocking SES Email Notifications (2025)

Flutter Push Notifications: iOS, Android, Web (Part 1: Android)

Twilio Alternatives for SMS Messaging in United States (2025)

Push Notification APIs Compared for Developers (June 2025)

Easy and Cost-Effective Transactional Email APIs Compared (2025)

Free and Paid SMS Notification APIs for US & Canadian Developers (2025)

Java: Send SMS and Email Notifications with NotificationAPI

Lovable: Send SMS and Email Notifications from Lovable.dev

Email Deliverability Best Practices | A Developer's Guide to Avoiding the Spam Folder

Auth.js Email 2FA Implementation Guide | Code samples (2025)

Auth.js Magic Link: Custom Email Provider + Code Samples (2025)

Send Custom Notifications from Supabase - With Example (2025)

Courier Alternatives - Top 3 Competitors (With Comparisons)

Knock Alternative: NotificationAPI - In-Depth Comparison (2025)

Knock Alternatives - Top 3 Competitors (With Comparisons)

Hidden Scalability Bottlenecks In User Notifications

Building a Notification Service: Top Technical Mistakes

Notification Service Design | The Ultimate Guide with Diagrams

Serverless Notification Service Design in AWS - with diagrams

Top Non-Technical Mistakes With Your Notification Service

Ultimate Guide on Notification Services - A Technical Overview (2024)

The Developer's Guide to Google Bulk Sender Requirements

How to prevent AWS SES review and suspension

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