Warmup Phases

Stages of mailbox warmup and their characteristics.

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Phase Overview

[Warmup] → [Maintain] → [Aggressive]
 2 weeks    2 weeks     ongoing

Phase	Duration	Goal
Warmup	14 days	Build basic reputation
Maintain	14 days	Stabilize metrics
Aggressive	Ongoing	Maximum efficiency

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Phase 1: Warmup

• Duration: 14 days

• Starting volume: 5 emails/day

• Ending volume: 15-20 emails/day

• Conservative sending, high engagement (80%+)

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Phase 2: Maintain

• Duration: 14 days

• Volume: 20-30 emails/day (stable)

• Focus: Metric stability

Criteria for Next Phase

• ✅ Inbox Rate > 85%

• ✅ Reputation Score > 70

• ✅ Stable metrics for 7+ days

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Phase 3: Aggressive

• Duration: Ongoing

• Volume: Up to plan limit

• Maximum allowed volume with optimized engagement

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Phase Indicators

Badge	Color	Meaning
WARMUP	Blue	Initial warmup
MAINTAIN	Yellow	Maintenance phase
AGGRESSIVE	Green	Aggressive mode
PAUSED	Gray	Paused