How does the 171mails pricing calculator work?

Instead of rigid fixed tiers, simply slide or choose your monthly sending volume. Our engine recommends the exact number of 100K blocks needed at $29 USD per block.

How many dedicated IPs are included?

Up to 1 Million (1Mn) monthly volume, your deployment includes 4 Dedicated IPs (2 IPv4 and 2 IPv6 dual-stack) configured in an automated rotation pool. Higher volumes above 1M scale in proportional dual-stack clusters.

What is the Inboxing Test Account?

For clients who want to verify delivery speed, interface, and inbox placement before subscribing to high-volume plans, we offer a 7-day live sandbox test account for just $5 USD. This prevents spam abuse while giving genuine senders full proof of delivery.

Calculate Your Bulk Email Infrastructure

Currency:

1. Select Monthly Sending Volume

Move the slider or click a preset to calculate your capacity, dedicated IP pool, and throughput pacing.

Required Sends / Month: 500,000

2. Recommended Infrastructure Architecture

Architecture Capacity

5 Blocks (500K)

Dedicated IP Pool

4 Dedicated IPs (2 IPv4 + 2 IPv6)

Safe ISP Pacing

1,250 emails / hr

Reputation Shield

Dual-Stack Warmup Pool

Dedicated IP Allocation: Up to 1 Million (1Mn) monthly sends, your cluster includes 4 Dedicated IPs (2 IPv4 and 2 IPv6) in an automated rotation pool. Higher volumes scale in proportional dual-stack clusters.

Calculated Monthly Cost

$145 / mo

Rate: $29 per 100K block • 5 Blocks Active

Deploy Production Cluster $145/mo

Full high-volume production setup with your 4 dedicated IPs (2 IPv4 + 2 IPv6), custom domain DNS (SPF/DKIM/DMARC), and 99.8% SLA.

7-Day Inboxing Test Pass $5 Paid Sandbox₹399 Paid Sandbox

Want to test our inboxing and delivery speed first? Activate a 7-day test sandbox for just $5 USD₹399 INR before subscribing.

Zero spam-trap tolerance • Instant Provisioning

Why Senders Choose 171mails Delivery Architecture

Engineered for high-volume email operations with zero compromise on deliverability.

Dual-Stack IP Rotation

Every deployment up to 1M sends includes 4 Dedicated IPs (2 IPv4 + 2 IPv6). Your sender score is completely isolated and load-balanced.

Throughput Pacing Engine

Automated sending throttles at (Monthly / 20) / 20 ensure your broadcast bursts strictly adhere to Gmail & Yahoo rate limits.

$5₹399 Inboxing Test Pass

Verify your real-world inbox placement, test delivery performance, and experience our speed with a low-cost $5 USD₹399 INR test sandbox before committing.

Calculate Your Exact Sending Infrastructure