Halon Protect offers unmatched functionality, flexibility, and stability. But what probably matters more is the end result for us as an e-mail service provider. Halon Protect, simply put, does exactly what it was designed to do, it keeps unwanted e-mail traffic from your and your customers' inbox.

We send billions of emails monthly, and Halon Engage handles them without a hiccup. The core engine is robust in handling email volumes at any scale. The lean and flexible architecture enabled us to customize it to fit into our ecosystem without much change on our side. But, it's not just the product that excels for us. Their team is an absolute dream. Right from day 1, they were aligned with our goals and walked the extra mile to make the daunting migration a buttery smooth operation. Their deep tech expertise, from participating in architecture design to deployment and excellent support made the transition painless and efficient. I can say that this is one of the most customer-centric teams I've ever worked with. What stood out for us: 1. Scale and Speed 2. Flexibility via extensions 3. Granular and Real-time monitoring for deliverability 4. Dream team support

Unbelievably effective email MTA at scale. The support staff is top-notch. We have the system configured as a high volume inbound and outbound SMTP server, configured in a cluster of nodes that span multiple countries. We use the service for anti-spam, anti-virus, and SMTP with user authentication against an API. Upgrades have been seamless, stability has been world-class and their approach to engineering is beyond reproach. We replaced 70 postfix servers with 7 Halon nodes and we could have probably done it with 4!