Honest guides on deliverability, list hygiene, and transactional email — written by the team building Brixus365.
Transactional emails are the receipts, password resets, and order updates your product sends one person at a time, triggered by something they did. Here's how they differ from marketing email, the common types, and how sending actually works.
What you'll learn
For a direct-to-consumer brand, email is the one channel you own outright — no algorithm, no ad auction. Here's how the pieces fit together: the transactional email that builds trust, the campaigns that drive revenue, and the deliverability work that keeps both landing.
What you'll learn
Send your first email from Python in about five minutes — no SDK required, just the requests library and one HTTP POST. Covers starter templates, your own HTML, dynamic data, batch sends, and error handling.
What you'll learn
Connect Brixus365 to Claude, Cursor, or any AI assistant and it can design, send, schedule, and track email — just by asking. Here's what that unlocks, the use cases that work today, and how to run it hosted or self-hosted.
What you'll learn
A hands-on walkthrough of SMTP integration for Django, Rails, Node.js, and more — covering DNS records, credentials, code examples in four languages, common error codes, and production readiness.
What you'll learn
A practical guide to using the Brixus365 MCP server to give AI agents the ability to send and manage email — setup for each client, example workflows, safety controls, and where AI-orchestrated email is going.
What you'll learn
A first-build walkthrough of the Brixus365 transactional email API -- authentication, sending your first email, idempotency keys, error handling, webhooks, and what to watch for in production.
What you'll learn
Every transactional email moves through a status lifecycle -- pending, sent, delivered, opened, clicked. Here is how to track every stage, monitor bounces and complaints, and use per-template analytics to keep your critical emails healthy.
What you'll learn
A complete guide to sending transactional emails -- order confirmations, password resets, shipping notifications -- via REST API or SMTP. Includes migration paths from SendGrid and Mailgun, attachment handling, and template integration.
What you'll learn
A complete walkthrough of setting up your sending domain, DNS records, and verified sender addresses in Brixus365 -- with provider-specific guides and troubleshooting tips.
What you'll learn
A technical guide to building and managing API keys with granular, scoped permissions -- so a compromised integration cannot take down your entire account.
What you'll learn
Bounces silently destroy your sender reputation, waste your budget, and distort your analytics. Here is how to detect, classify, and automatically suppress them before the damage is done.
What you'll learn
A practical, policy-grounded guide to creating WhatsApp Business API template messages that get approved the first time -- covering naming rules, formatting, variables, translation, and Meta's approval process.
What you'll learn
A practical guide to orchestrating email, SMS, and WhatsApp campaigns across the full customer journey -- including channel selection, timing, compliance, and unified measurement.
What you'll learn
A clear-eyed guide to the email metrics that drive real decisions -- open rate, CTR, CTOR, bounces, unsubscribes, and spam complaints -- plus how Apple MPP changed the game and what to do about it.
What you'll learn
A comprehensive guide to SPF, DKIM, and DMARC authentication, IP warm-up, sender reputation, list hygiene, and everything else you need to reliably reach the inbox.
What you'll learn
A practical, data-backed guide to crafting subject lines that earn the open -- covering length, personalization, proven formulas, A/B testing, and the mistakes that kill open rates.
What you'll learn
A dirty email list is costing you more than you think -- in deliverability, sender reputation, and cold hard cash. Here is how to clean it up and keep it that way.
What you'll learn