How to Calculate the Lifetime Value of a Cold Email-Sourced Customer
Understanding the lifetime value (LTV) of cold email-sourced customers enables strategic budget allocation.
Understanding the lifetime value (LTV) of cold email-sourced customers enables strategic budget allocation.
The LTV calculation
LTV = Average revenue per customer per month × Average customer lifetime in months If your cold email-sourced customers pay $500/month on average and stay for 24 months on average, LTV = $500 × 24 = $12,000.
Why cold email LTV may differ from other channels
Cold email-sourced customers may have different retention rates than inbound-sourced customers. They were actively pursued rather than self-selecting, which can result in different engagement levels. Track LTV by source to understand these differences.
LTV-to-CAC ratio
Customer Acquisition Cost (CAC) for cold email = total cold email costs ÷ customers acquired. The LTV-to-CAC ratio should be at least 3:1 for a healthy business model. If your LTV is $12,000 and your CAC from cold email is $2,000, your ratio is 6:1 — excellent.
Strategic implications
If cold email LTV:CAC exceeds other channels, invest more in cold email. If it falls below, investigate whether the issue is targeting (wrong customers) or cost (infrastructure/tool costs too high).
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