Guías de entregabilidad y renderizado
Guías sobre renderizado en bandeja, SPF/DKIM/DMARC, soporte CSS y pruebas previas al envío.
Why the same email looks different in every inbox
A practical guide to how Gmail, Outlook, Apple Mail, and Yahoo render HTML email differently, and what founders should expect before they blame their ESP.
Leer guíaEmail deliverability for founders: the first 90 days
Authentication, list quality, complaint rates, and warming explained for first-time founders who need mail to reach the inbox without hiring a deliverability team.
Leer guíaSPF, DKIM, and DMARC: setup that actually sticks
A DNS-first walkthrough of the three authentication standards mailbox providers expect, with alignment examples and a sane DMARC rollout path.
Leer guíaEmail client CSS: what works, what fails, and what to avoid
A developer-friendly map of CSS support across Gmail, Outlook, Apple Mail, and Yahoo, with patterns that survive real inboxes.
Leer guíaPre-send testing: a workflow that catches real failures
Litmus, seed inboxes, link checks, and spam filter tests arranged into a repeatable pre-send workflow for small teams without a QA department.
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