The Academy4 courses · 113 lessons · no gates
Learn the wholediscipline. Free.
Every module of every course, with no plan required and no signup. Learn how deliverability actually works — then let the monitor keep you honest.
4Courses
48Modules
113Lessons
$0Forever
The courses
Each one runs module by module, from first principles to production.
01Beginner to Advanced · 6h
Email Deliverability
Master inbox placement in 2025–2026. SPF, DKIM, DMARC, reputation, and compliance.
12 modules37 lessonsFree
02Intermediate · 8h
Mailcow
Run a production-grade Dockerized mail server with Postfix, Dovecot, Rspamd, and SOGo.
12 modules26 lessonsFree
03Intermediate · 8h
Dovecot
The world's most-deployed IMAP server — install, tune, secure, replicate, and scale.
12 modules25 lessonsFree
04Advanced · 9h
KumoMTA
The modern PowerMTA alternative — ship millions of emails/hour with per-destination shaping.
12 modules25 lessonsFree
Theory is cheap. Check your domain.
Everything these courses teach, measured against your actual DNS — free, in about a minute.