Cold email is legal business outreach with a legitimate purpose. Spam is unsolicited bulk messaging. The difference is targeting, personalization, compliance with CAN-SPAM, and providing clear opt-out options.

SPF, DKIM, and DMARC are authentication protocols that prove your emails are legitimate. Configure these DNS records before sending any cold emails. Without them, most emails land in spam folders.

Your domain reputation determines inbox placement. New domains need warming (gradual volume increase). Sending too many emails too fast from a new domain destroys your reputation permanently.

Define your ideal customer profile before building any list. Cold email works best when targeting specific decision-makers at companies matching your criteria. Quality targeting beats quantity every time.