22 expert guides on email marketing, deliverability, and engineering.
A comprehensive guide covering SPF, DKIM, DMARC authentication, IP warm-up strategies, and deliverability monitoring—everything developers need to land in the inbox in 2025.
A technical deep-dive into SPF, DKIM, and DMARC DNS records with real configuration examples, common pitfalls, and how modern ESPs handle authentication for you.
A step-by-step warm-up playbook for new domains and IPs, including volume schedules, engagement targeting, and automated tooling from brew.new and Mailgun.
Explore how AI agents are transforming drip campaign development—from generating subject lines and body copy to optimizing send times and sequence branching logic.
A detailed breakdown of a 7-part SaaS onboarding email sequence, covering the purpose, timing, and content strategy for each email from welcome through conversion.
A developer-focused implementation guide for behavioral trigger emails, covering event-driven architecture, webhook integration, queue processing, and API patterns with real code examples.
A comprehensive reference for HTML email structure covering table-based layouts, responsive techniques, head and body patterns, and the rendering quirks that catch every developer off guard.
How React Email components and AI code generation are modernizing email development. Build maintainable, type-safe email templates with component-driven architecture and AI assistance.
Architectural patterns for managing email templates at scale, including design systems, component reuse, template versioning, and choosing between hosted and self-managed approaches.
The definitive guide to email rendering across 90+ clients. Covers Outlook, Gmail, Apple Mail, and mobile client quirks, plus testing strategies and tools to catch rendering issues before they reach your users.
A practical guide to making emails look great in dark mode. Covers the three dark mode behaviors, CSS media queries, color-scheme meta tags, and bulletproof fallback strategies.
Learn the fluid hybrid method for building responsive emails that adapt to any screen size without relying on media queries, using ghost tables and percentage-based widths.
Developer tool companies face unique email marketing challenges. Learn strategies for onboarding sequences, changelog updates, and growth loops that resonate with technical audiences.
Most email A/B tests are statistically meaningless. Learn how to calculate proper sample sizes, apply significance testing, and implement multi-armed bandit strategies for email optimization.
Vibe coding is changing how developers build email campaigns. Learn to use AI assistants like Cursor, Claude, and Copilot alongside platforms like Brew to generate complete email sequences from natural language descriptions.
An honest, developer-focused comparison of the top email APIs in 2025: Resend, SendGrid, Postmark, Mailgun, and Brew. We cover pricing, DX, deliverability, and when to choose each one.
We compare the AI email generation capabilities of Brew, Loops, and Customer.io across template creation, subject line optimization, content personalization, and sequence building.
A developer-focused guide to email compliance across CAN-SPAM, GDPR, and CASL. Learn the specific technical requirements, implementation patterns, and how major email platforms handle compliance.
Dirty email lists destroy deliverability. Learn how to build automated bounce processing, maintain suppression lists, and implement re-engagement campaigns that keep your sender reputation healthy.
Open rates are unreliable. Learn which email metrics actually predict business outcomes, how to implement conversion attribution, and how to connect email engagement to revenue.
Build a custom email analytics dashboard from scratch. Learn how to process ESP webhooks, build a data pipeline, and create visualizations that give you deeper insight than any built-in dashboard.
Traditional deliverability monitoring relies on lagging indicators. Learn how AI and machine learning can detect deliverability issues earlier, diagnose root causes automatically, and suggest remediation steps.