Product updates, engineering deep-dives, and tutorials from the PostaSend team.
Today we are releasing PostaSend 2.0 with first-class multi-tenant isolation, dedicated IP pool management, and a completely redesigned dashboard. Here is what is new and why it matters for SaaS teams.
A deep dive into the architecture changes we made to our queuing layer — moving from a polling-based Redis queue to a push-based Kafka topology — and how it eliminated our P99 latency spikes.
A step-by-step guide to wiring up transactional email in a Next.js 15 App Router project — from account creation confirmations to invoice delivery — using the PostaSend SDK and Route Handlers.
DMARC has been around for over a decade, but we still see it misconfigured on the majority of new PostaSend domains. This guide breaks down the record syntax, common pitfalls, and a safe rollout strategy.
At scale, bounce handling is not just about suppression lists — it's a real-time signal processing problem. We explain how we built our bounce classification engine and what signals predict list quality.
Every quarter we publish aggregate deliverability metrics across our platform. In Q1 2025, our customers achieved an average 99.2% inbox placement rate across Gmail, Outlook, and Yahoo — here is how.