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Glossary

Definitions for outbound operators

Plain-language definitions.

Cold email Email warmup SPF DKIM DMARC Bounce Soft bounce Spam complaint Unsubscribe Suppression list Open rate Click rate Click-to-open rate Reply rate Out of office Mailbox rotation Sending domain Primary / corporate domain Return-Path Open pixel List hygiene Role account Spintax Personalization Sequence / cadence A/B variant Send window Deliverability Inbox placement RBL / blacklist Greylisting Throttling Seed list CAN-SPAM CASL GDPR Legitimate interest MX record CNAME BIMI TLS SMTP IMAP OAuth Workspace Unique contacts Mailbox seat Test send From name Plain text vs HTML

Cold email through mailboxes you own. Google, Microsoft, or SMTP — not a shared blast platform.

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