Postscale Blog

Invite teammates, assign roles, and limit member access to specific domains without sharing an owner login.

A practical guide to noreply and no-reply email addresses: when they are fine, when they cause support and deliverability problems, and how to route replies properly.

Send email and verify Postscale webhooks from Ruby and Rails with the official RubyGems package.

Send email and verify Postscale webhooks from Python with the official PyPI package.

Send email and verify Postscale webhooks from Node.js and TypeScript with the official npm package.

Why bounces, complaints, unsubscribes, and manual blocks should move before your first send through a new email provider.

A practical guide to delayed email bounces, why the SMTP envelope matters, how Return-Path domains route DSNs, and how Postscale turns them into bounce webhooks.

What actually changes when you move transactional sending from Mailgun to an EU-hosted provider — DNS, API calls, events, inbound, and the migration-week checklist.

Walk through parsing DMARC aggregate (RUA) XML reports in three languages. Schema handling, gzip/zip unpacking, and aggregating records across multiple reports.

Side-by-side look at four transactional email APIs — pricing, features, EU-compliance posture, and when to pick each.

Warming an IP versus warming a domain are different problems with different timelines. Here's what each is, when you need it, and how to do it without burning your sender reputation.

A practical breakdown of EU data residency, GDPR processor requirements, and how the major transactional email APIs stack up against them.

Step-by-step guide to turning a customer-facing inbox into structured webhooks. Parse MIME, handle attachments, detect replies, and route by subject pattern.

Why forwarded email breaks SPF, what SRS (Sender Rewriting Scheme) does about it, and when you absolutely need to implement it.

DMARC aggregate reports arrive as compressed XML from dozens of receivers. Here's how to parse, aggregate, and act on them without opening a single ZIP by hand.

A concrete 2026 setup for email authentication — what Gmail and Yahoo now require, what's changed from 2024, and the DNS records you actually need.

What XRechnung is, what the German B2B e-invoicing mandate requires, and how to send and receive EN 16931-compliant invoices through a REST API.

Today we're launching Postscale - complete email infrastructure for developers. Send, receive, and protect.

Everything you need to know about getting your emails into the inbox, not the spam folder.

How masked email addresses protect user privacy and why every platform should offer them.