Outbound
Cold email deliverability is the rate at which outbound emails reach their intended recipients' inboxes rather than being routed to spam, quarantined by a recipient's mail server, or silently dropped. Deliverability is determined by domain reputation, sending infrastructure configuration, message content, and engagement patterns on prior sends from the same domain.
Deliverability problems are often invisible. A message can be reported as sent by the sending platform while the recipient's mail server has already flagged the domain and routed the email to the junk folder. The sender sees no bounce; the recipient never sees the message.
The primary technical levers are SPF, DKIM, and DMARC authentication records on the sending domain, plus the domain's age and sending history. A new domain with no sending history and no authentication records will fail deliverability checks from major providers before a single message is evaluated for content.
Domain warming, secondary sending domains, and careful volume ramping are the standard operational approaches to building and maintaining deliverability. High unsubscribe and spam-complaint rates destroy domain reputation quickly; high reply rates signal positive engagement to mail providers and preserve it.
Related terms
PulsePoint Strategic turns signals like these into timed, approved outreach. See how on the signal intelligence page, or estimate the impact with the ROI calculator.
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