Deliverability

Getting your emails into the inbox and keeping your domain healthy.

1 article · 6 glossary terms

DeliverabilityGuideOct 26, 20262 min read

SPF, DKIM and DMARC Explained Without the Jargon

Three DNS records decide whether your cold emails reach the inbox. What each one does, how to check yours and what to fix first.

Terms in this topic

Bounce rateThe share of sent emails that could not be delivered. DKIMAn email signature that proves a message came from your domain and was not changed on the way. DMARCA DNS policy telling inboxes what to do with mail that fails SPF or DKIM checks. Email warm-upGradually increasing sending volume on a new domain so inboxes learn to trust it. Sender reputationHow much inbox providers trust your domain, based on bounces, complaints and engagement. SPFA DNS record listing which servers are allowed to send email for your domain.