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Outbound Filtering

Stop Customer-Driven Spam
Before It Damages Your Reputation

MailChannels is the outbound filtering layer for hosting providers — battle-tested at over 100M messages per day, trusted by 25% of the top 100 hosts.
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Why Choose MailChannels?

  • Cut Email-Delivery Support Tickets
  • Stay Off Blocklists
  • Detect Compromised Customers Faster
  • Run Email Without Running an Email Team

Achieve Inbox Delivery

Ensure reliable delivery of your customers’ emails.
Maintain Strong Reputation

Maximize Inbox Delivery

Intelligent IP pools and per-sender reputation tracking keep your customers’ mail flowing to Gmail, Microsoft, and Yahoo.

Reduce Support Tickets

Catch Spam Before It Leaves Your Network

Inline detection identifies compromised accounts, phishing campaigns, and spam bursts before they damage your IP reputation.

Send Reliably At High Volumes

Cut Support Ticket Volume

Customers like DreamHost have reduced email-delivery tickets from 300 a week to about 10. Rebel reported a 90% drop.

Features

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No Hardware, No Maintenance

Cloud-native SMTP relay. Point your servers at MailChannels and your existing infrastructure stays where it is.

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Inline Threat Detection

Spam, phishing, and malware identified and blocked before messages leave your network.

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Self-Serve False-Positive Recovery

Customers resolve their own delivery issues through MailChannels Insights™ — without escalating to your support team.

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24/7 Operations Coverage

A dedicated support team that knows email abuse, available when you need it.

Detect Hacked Hosting

Detect Compromised Accounts

Identify spam-like trends in outgoing emails from your servers and applications to spot compromised accounts quickly.

Receive Monitoring Alerts

Alert monitors notify you of spamming activity within your network.

Automate Account Shutdowns

Shut down abusive accounts automatically using API webhooks.

Improve Deliverability of Legitimate Emails

Automatically prioritize legitimate emails from well-behaved senders to optimize inbox performance without manual intervention.

Improve Deliverability

Built for Shared Hosting Providers

Multiple SMTP Credentials per Account

Issue distinct credentials per server so you can revoke compromised access without disrupting the rest of your fleet.

Role-Based Team Access

Set up web console logins with appropriate access levels for support, operations, and admin staff.

Operational Visibility Across Your Whole Fleet

Log search, analytics, and per-sender behavior in one place.

Observability To Web Hosting Email

Monitor Your Web Hosting Email at a Glance

Quickly resolve issues with powerful log search and analytics tools, reducing support ticket resolution time.

Diagnose Email Delivery Problems with an Intuitive UI

Utilize our user-friendly interface to manage accounts and troubleshoot delivery problems efficiently.

Empower the Support Team

Enable your support team to search through logs swiftly, providing quick answers to email delivery questions.

View Sender Profiles

Access detailed sender profiles that include all sent mail, alerts, and metrics to identify spammers instantly.

Find the Sender Behind Every Problem

The Top Senders report ranks volume, spam detection, and rejections by sender — so you can identify compromised accounts in seconds, not hours.
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Top Senders Report

Your Data is Safe and Secure

MailChannels takes the security of your data and the privacy of your users very seriously. We are committed to providing an environment that is safe, secure, and available to all of our customers worldwide.

GDPR Compliance

We are fully committed to complying with GDPR requirements, ensuring the security and privacy of our customers and their users. Learn more

SOC2 Certification Efforts

We are working towards SOC 2 Type II certification by implementing comprehensive user authentication, robust data integrity controls, and continuous monitoring.

Privacy-First Infrastructure

Unlike other email-sending services, we retain message data only as long as necessary to queue and deliver messages, reducing exposure to potential breaches.

Trusted by 25% of the Top 100 Hosting Providers

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What people are saying

Dreamhost Logo Dark
“We went from 300 tickets a week, down to about 10. Overall, the solution just fit and works. We couldn’t be happier with it.”
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Erik Nieves
System Administrator, DreamHost
Rebel Logo Dark
“As a result of MailChannels, the number of tickets related to email delivery dropped by 90%.”
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Brett Tackaberry
Chief Technology Officer, Rebel.com
1 Grid Logo Dark
“With MailChannels, we do not need to be concerned about spammers causing damage to our sender reputation.”
Sarel Le Roux
Sarel Le Roux
Linux System Administrator, 1-grid
Wowrack Logo Dark
“Since we started using the solution we’ve seen a sharp decline in blocklisting— upwards of 90 percent—on our IP subnets protected by the software.”
Erward Osckar
Erward Oskcar
Founder and Owner, Wowrack
Hostpapa Logo Dark
“We came back to MailChannels after spending a couple of years with a cheaper spam filtering solution that caused our support team so much pain and expense. Trust me: You’ll save money with MailChannels.”
Collin simmons photo
Collin Simmons
System Operations Manager, HostPapa
Xxlhosting Logo Dark
“We had MailChannels up and running in two days, it was a smooth process.”
Sander Cruiming
Sander Cruiming
Founder and CEO, XXL Webhosting
Chemicloud Logo Dark
“MailChannels’ outbound filter is the perfect solution for overcoming email blacklisting, and has proven time and time again to be a powerful selling feature that also helps us retain customers.”
John Mcullin
John McMullin
Business Development Manager, ChemiCloud
BoostedHost Dark
“Before using MailChannels, we were constantly battling Spamhaus listings. Since switching, those problems are gone—our emails now deliver reliably, every time.”
Jordan Unegbu
Jordan Unegbu
Chief Executive Officer, BoostedHost

Talk to a MailChannels expert

Whether you’re protecting a hosting fleet, building a platform, or shipping an agent — tell us what you’re working on and we’ll point you to the right fit.
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