Warm Domains
Cold Email Compliance & Legal2 min read·2027-02-17

How to Build Recurring Revenue in a Cold Email Agency

Recurring revenue provides stability and enables long-term planning.

Recurring revenue provides stability and enables long-term planning.

The retainer model

Monthly retainers are inherently recurring. Structure retainers with annual commitments (with monthly payment) for more predictable revenue. Offer a discount for annual commitment: "$4,000/month on month-to-month or $3,500/month with a 12-month commitment."

Expanding retainers

Identify opportunities to expand existing client engagements: additional segments, new markets, higher volume, or additional channels. Expansion revenue from existing clients is the most efficient growth.

Infrastructure as a service

Offer infrastructure management as a standalone recurring service. Some clients want to run campaigns in-house but do not want to manage domains, accounts, and warmup. Charge a monthly fee for managed infrastructure.

Training and consulting

Offer ongoing consulting retainers for clients who want strategic guidance without full campaign management. Monthly strategy calls, campaign reviews, and optimization recommendations.


Need pre-warmed inboxes ready to send today? Warm Inboxes includes free .com domains and 24/7 support. Used by agencies doing 10,000+ emails per day. Check your deliverability free →

← Previous

How to Build a Cold Email Agency Content Marketing Strategy

Next →

How to Build a Cold Email Agency Partnership Program

Skip the wait. Buy pre-warmed inboxes.

Free .com domains. Trusted by Agency Velocity, Mailfirst, B2BScale and more.