Email Infrastructure Glossary
Every term you need to understand cold email infrastructure, deliverability, and sender reputation — explained in plain language.
D
DKIM (DomainKeys Identified Mail)
An email authentication method that uses cryptographic signatures to verify that an email was sent by the domain it claims to be from.
Read more →DMARC (Domain-based Message Authentication, Reporting and Conformance)
An email authentication protocol that builds on SPF and DKIM to give domain owners control over what happens to unauthenticated email.
Read more →E
Email Blacklist (RBL)
A real-time database of IP addresses and domains that have been flagged for sending spam or engaging in abusive email behavior.
Read more →Email Warmup
The process of gradually increasing email sending volume on a new domain or mailbox to build sender reputation with email providers.
Read more →I
Inbox Placement
The percentage of sent emails that successfully land in the recipient's primary inbox rather than the spam folder, promotions tab, or being rejected entirely.
Read more →IP Reputation
A score assigned to an IP address by mailbox providers based on its historical sending behavior, complaint rates, and engagement patterns.
Read more →S
Sender Rotation
The practice of distributing outbound email volume across multiple sender accounts and domains to maintain deliverability and avoid triggering spam filters.
Read more →SPF (Sender Policy Framework)
A DNS record that specifies which mail servers are authorized to send email on behalf of your domain.
Read more →Ready to stop fighting DNS?
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