Blog

Notes on sending email well.

Deliverability, deliverability, deliverability — plus the occasional dive into transactional email, compliance, and infrastructure.

7 min read

Transactional vs marketing email: what every developer should know

The technical and legal differences between transactional and marketing email, why you should separate them, and how MailStack handles both from one API.

transactionalmarketingcompliance
9 min read

How email deliverability actually works

A practical, jargon-light guide to SPF, DKIM, DMARC, sender reputation, and why your transactional email lands in spam — and how to fix it.

deliverabilitydkimdmarc