SendGrid vs Mailgun vs Resend: 2026 Email Service Deep Comparison
SendGrid, Mailgun, and Resend are popular developer email services. This article compares pricing, deliverability, API experience, and features.
SMTP Configuration Tutorial: Building Your Email Sending System from Scratch
SMTP is the core protocol for sending emails. This tutorial covers using third-party services and self-hosted email servers.
Transactional Email API Guide: Verification, Password Reset, and Notifications
Transactional emails are crucial for user communication. This article covers designing APIs for verification, password reset, and order notifications.
How an Email Travels from Your Outbox to Their Inbox: Delivery Basics and Spam Classification
Why do my emails land in the spam folder? To answer that, you first need to understand the full delivery path of an email. This guide uses a courier analogy to explain SMTP, receiving servers, IMAP/POP3, email headers, and the SPF/DKIM/DMARC mechanisms that decide an email's trustworthiness.