// definition
Email Deliverability
Email deliverability is the measure of whether the emails you send actually land in recipients’ inboxes rather than the spam folder or being rejected entirely. It depends on technical setup (SPF, DKIM, DMARC), sender reputation, list hygiene, and content.
Why it matters for developers
The best email sequence is worthless if it never reaches the inbox. For developers, deliverability is an infrastructure problem with a checklist — get the authentication and list practices right and your reach can jump dramatically.
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