IP Pool Overview

This guide explains how Bento sending pools work, what Bento manages for you, and what you can control to protect your domain reputation.

Most customers are better served by shared pools. They carry steady, healthy volume across many good senders, which helps inbox providers trust the mail stream.

Your job is to protect your domain reputation. Bento manages the IP pool, while you manage list quality, authentication, sending pace, and subscriber expectations.

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Account Assignment

New accounts are assigned to pools based on account quality, account profile, expected volume, sending history, and compliance requirements. The goal is to keep similar sending patterns together and reduce the chance that one risky sender affects healthy customers.

We may also route senders based on destination patterns. For example, a pool may build consistent volume to a set of regional inbox providers, which helps keep reputation stable for those destinations.

IP Pool Structure

• Each IP pool contains either 1 or 2 IP addresses.
• Multiple Bento accounts share the IPs within a pool.
• Pools are dynamically managed to maintain optimal performance and reputation.
• The number of users per pool is carefully balanced to prevent overuse of any single IP.

IP Monitoring and Maintenance

Active Monitoring

We use a robust monitoring system that continuously checks the status of all IPs in our pools. This includes:

• Real-time blacklist checking across major blacklist providers
• Monitoring of IP reputation scores
• Traffic pattern analysis to detect anomalies

Blacklist Management

When an IP is detected on a blacklist:

• The IP is immediately flagged in our system.
• All traffic through the affected IP may be halted.
• An investigation begins.
• Users who caused the issue are notified via email (and potentially paused from sending).
• Our team starts the blacklist removal process with the relevant providers.
• The IP is removed from its pool and replaced with a clean IP.
• Affected users are temporarily reassigned to maintain service continuity.

Proactive Maintenance

To keep our IP pools healthy:

• Conduct periodic reviews of IP performance and user assignment.

Best Practices for Senders

To help maintain strong pool performance:

• Complete DNS Setup before scaling volume.
• Follow the Domain Warmup Guide for new domains or major volume increases.
• Use Sending Limits as your pacing guardrail during trial and warmup.
• Import only permission-based contacts with the Import Guide.
• Watch bounce patterns in the Bounce Guide.
• Report suspected misuse or unusual account activity promptly.

Dedicated IPs

Bento can offer dedicated IPs, but we usually recommend shared pools unless you have consistent high volume and strong sending discipline. A dedicated IP can make sense for customers sending more than 500,000 emails per day, but volume alone is not enough. You also need clean list sources, verified DNS, stable engagement, and a proper warmup plan.

If you are unsure, shared pools are usually the more reliable choice.

What You Control

You do not need to choose or manage your pool. Focus on the parts that affect your reputation most: authentication, consent, segmentation, pacing, content quality, and how quickly you react to bounces or complaints.