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Solutions

BY INDUSTRY

Regulated & Public Sector Protect sensitive email operations with granular policy enforcement and full auditability Email Service Providers & Martech Scale high-volume delivery for every sender you serve, with greater reliability and speed Cloud Email Security Providers Bring better protection, smarter policies and faster innovation to your security suite Mailbox Providers, Telcos & ISPs Protect every client inbox at scale, with granular policies and real-time threat detection Hosting Providers Secure inbound email for every hosted customer, with per-individual policy control Brands & Enterprises Send high-volume customer emails with full control and delivery visibility

BY USE CASE

Centralize SMTP Relay Route email from every app and device through one secure, authenticated layer Modernize Your Sending MTA Move off PowerMTA or Momentum, and get more control, visibility, and scale, with no downtime Move Beyond Your Cloud Email API Bring email delivery in-house for full control and real-time visibility Accurate Threat Detection at Scale Give your cloud email security platform consistent multi-tenant detection, with fewer false positives Streamline Email Security Infrastructure For cloud email security providers, simplify a fragmented stack to cut overhead and innovate faster

COMPARE HALON

Halon vs Cloud Email APIs Get more control, visibility, and ownership over email delivery Halon vs PowerMTA Replace an aging MTA with a modern email delivery infrastructure Halon vs Momentum Switch to an actively developed email delivery solution with dedicated support Halon vs Vade Secure Detect threats with near-zero false positives and have full control over your data

All about migration→

Migration Library

Comparison guides and migration advice for teams moving off their current email infrastructure or security platform

Products

EMAIL DELIVERY

Email infrastructure for high-volume senders

Halon Engage High-performance email delivery engine with full control and built-in intelligence that keeps email flowing

EMAIL SECURITY

Email security infrastructure & threat detection

Halon Protect Carrier-grade email gateway, protecting against incoming threats, and outgoing abuse with granular policy control

Halon Classify Real-time threat detection built on a powerful intelligence engine, deployed alongside Halon Protect or standalone

How can we help?

Replacing an existing MTA
Sending at high volume
Scaling transactional email
Detecting spam, phishing or malware
Enforcing security policies
Preventing outbound abuse
Looking for SMTP relay

These are just some of the problems we solve. Tell us about your email needs, and we’ll work with you to find the right solution.

Technology

Clients

CLIENT CASE STUDIES

KPN Discover how KPN accelerated time-to-market with Halon group.one Learn how group.one reduced email operating costs by up to 70% with Halon Netcore Cloud Discover how Netcore Cloud replaced PowerMTA with Halon to power 20 billion emails a month Constant Contact Find out why Constant Contact chose Halon Engage to ensure scalability, efficiency, and email deliverability

All case studies→

WHAT OUR CLIENTS SAY

NPS 75 Discover the top 15 reasons why our customers love Halon

Discover how our clients benefit with Halon

Explore real-world results from clients using Halon Engage, Halon Protect, and Halon Classify

Resources

LEARN

Blog Stay up to date with the latest news and expert insights in email infrastructure and security GitHub Explore our extensive library of ready-made modules, plugins and integrations to extend Halon’s capabilities Glossaries The terminology behind modern email infrastructure, spam filtering, security, and deliverability Guides & Reports Seven operational tests for your email infrastructure Nine shifts changing email operations for receivers

TECHNICAL HELP

Documentation Technical manuals, how-to articles and scripting references to configure, customize and manage your email infrastructure Support Get technical help from our support team

Latest from the blog

New guide: Nine shifts changing email operations for receivers Oct 20, 2026
Is your email platform a secret superspreader? Oct 13, 2026
Four ways to build email resilience for high-growth businesses Oct 8, 2026

All posts→

Company

GET TO KNOW US

About Learn about Halon, our mission, and expertise Why Halon See why leading email teams choose Halon Discover Dynamic Email Operations™ See how modern email operations should work Partners Explore Halon’s trusted technology and solution partners

WORK WITH US

Careers Join the team shaping composable email infrastructure

One trillion emails a year, 525 years of email expertise

Trusted by leading service providers and enterprises, including Microsoft, SAP, IONOS, Netcore Cloud, group.one, Zendesk, and many more.

Posts by

Anders Långsved

business, email, blog | Oct 2, 2024

A new exciting chapter for Halon

Dear Friends of Halon, Many of you have been our valued clients and partners for many years, so it l...

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Halon vs.

Cloud Email APIs
PowerMTA
Momentum
Vade Secure

Developed by a global team of front-running email experts.

Founded in 2010.

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© 2026 Halon Security AB.