Email Deliverability Fundamentals for Cold Outreach

Deliverability determines whether your cold emails reach the inbox or the spam folder. The fundamentals are configuration, reputation, and list quality.

Configure authentication

SPF, DKIM, and DMARC verify that your sending domain is legitimate. Without them, your emails are more likely to be flagged.

Use a real sender identity

Send from a domain and address that recipients can verify. This builds trust and protects reputation.

Keep lists clean

Verify addresses and remove bounces promptly. A high bounce rate harms your sender reputation.

Respect opt-outs

Honor unsubscribe requests immediately. Compliance protects both your reputation and your deliverability.

Warm up carefully

Gradually increase sending volume on new domains. Sudden spikes look suspicious to inbox providers.

Deliverability is not a one-time setup — it is a discipline that protects every campaign you run.