Automated Email Warmup That Keeps Your Inbox Healthy at Scale

How ProspectAI Solves This

Email warmup is the invisible foundation of successful cold outreach. Without it, new sending accounts have no reputation, and even well-written cold emails end up in spam. Most teams either skip warmup entirely or use basic tools that send artificial engagement patterns easily detected by email providers. ProspectAI's warmup system is built differently. It simulates realistic email behavior using five distinct conversation flow patterns, including meeting scheduling progressions that mirror how real business email threads develop. Engagement is varied naturally — 2-5 opens per message, occasional link clicks, and reply delays ranging from 1 to 72 hours — creating patterns indistinguishable from genuine human email activity. The system runs continuously, not just during an initial ramp-up period. This means sender reputation is actively maintained even as cold outreach volume increases. The auto-equilibrium feature monitors inbox health metrics in real-time and automatically adjusts the ratio of warmup to cold emails. If deliverability dips, the system increases warmup volume and reduces cold sends until health recovers. Health thresholds are clearly defined: open rates above 40% and reply rates above 5% indicate a healthy account, while spam rates above 0.3% trigger automatic protective measures. Each account's health is tracked on a dashboard showing inbox placement rates, bounce rates, and engagement metrics. For teams scaling outbound, ProspectAI's warmup handles the complexity of managing dozens of sending domains and accounts simultaneously, ensuring every account maintains healthy metrics before and during cold outreach.

Challenges This Solves

• New email accounts lack sender reputation, causing cold emails to land in spam from day one
• Manual warmup processes are tedious and inconsistent, often failing to build sufficient reputation before outreach begins
• Scaling cold email volume requires warming up dozens of accounts and domains — an impossible task without automation

Key Features

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  Realistic engagement simulation with 2-5 opens, link clicks, and human-paced reply delays (1-72 hours)

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  Auto-equilibrium that adjusts warmup-to-cold ratios based on real-time inbox health metrics

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  Five conversation flow patterns including meeting progressions for natural-looking email threads

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  Continuous warmup that runs indefinitely alongside cold outreach to maintain sender reputation

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  Health dashboard tracking open rates, reply rates, bounce rates, and spam placement per account

Use Cases

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  Sales teams warming up new email accounts before launching cold outreach campaigns

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  Organizations recovering sender reputation after deliverability issues or spam folder placement

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  Teams scaling outbound by onboarding multiple sending domains and accounts simultaneously

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