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📊 Infrastructure Calculator

Determine the ideal number of IPs, servers, and sending time required for your daily email volume.

Daily Email Volume (Total Emails):

Desired Sending Speed (Emails/Minute):

Reputation / Warmup Stage:

Understanding the Metrics

Scaling email delivery is about balancing volume, speed, and reputation. Using the right infrastructure prevents over-saturating mail servers, which can lead to blocks and blacklistings.

**Emails Per IP:** A core metric. ISPs often limit the amount of email a single IP can send before throttling. We use conservative estimates based on your reputation stage.
**Required Servers (Nodes):** This is the computing power needed to process the volume at the desired speed. We recommend slightly more servers than IPs for redundancy and performance overhead.
**Total Sending Window:** The total time, in hours and minutes, it will take to send your entire volume at the specified speed. Keeping this window short (under 4 hours) is often preferable for time-sensitive campaigns.

Reputation Stage Guidelines

The number of emails you can safely send per IP is directly tied to your sender reputation:

**Low (New/Cold IP):** We limit volume to **10,000 emails per IP per day**. This is safe for new domains just starting the warmup process.
**Medium (Warmed Up/Mixed IP):** We allow up to **25,000 emails per IP per day**. Suitable for domains that have completed their initial warmup (20-30 days).
**High (Established/Premium IP):** We allow up to **50,000 emails per IP per day**. This is reserved for aged, high-reputation domains using dedicated or certified IPs.