mailborder Review, Pricing & Features

Mailborder is an email security gateway that filters spam, viruses, and phishing, available self-hosted on Linux or as a hosted SaaS for Exchange, Office 365,…

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August 6, 2026
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Mailborder is an email security gateway product from Mailborder Systems that inspects inbound email for spam, viruses, malware, phishing, and ransomware before delivery to a user's inbox. It works as an add-on layer in front of an existing mail server or hosted email service rather than hosting mailboxes itself, and it is compatible with any email server or most hosted platforms, including Microsoft Exchange, Office 365, Zimbra, iRedMail, MDaemon, Zentyal, cPanel, Kerio, and Zoho.

The product ships in two deployment models. The self-hosted Email Gateway is Linux server software (virtualization- and cloud-friendly, including VMware, Xen, AWS, DigitalOcean, and Linode) that customers install and control themselves through a web-based admin interface, with a free 30-day trial available during installation. The Hosted Email Filter is a SaaS version of the same filtering technology, managed entirely by Mailborder, priced per seat, and set up by simply repointing a domain's mail DNS records at Mailborder's servers.

Core capabilities include customizable spam filtering, support for up to three virus scanners with zero-day signature updates, geographic/continent-based blocking, global/group/user-level white and black listing, email archiving, and spoof protection to stop domain impersonation. Both deployment options are managed through a browser-based admin console and a mobile-friendly end-user portal where individual users can view, release, and get scheduled reports on their own quarantined mail.

Key Features

Pros & Cons

Pros

  • Offers both a self-hosted Linux gateway and a fully managed hosted SaaS option, so teams can choose based on control vs. convenience
  • Broad compatibility with major mail platforms, including Microsoft Exchange, Office 365, Zimbra, iRedMail, Kerio, Zentyal, and cPanel
  • Supports up to three virus scanners with zero-day signature updates alongside spam, geo-blocking, and spoof protection
  • Free 30-day trial for the self-hosted install with no registration required, plus 10-day trials on select licenses
  • Mobile-friendly self-service portal lets end users view and release their own quarantined mail

Cons

  • Self-hosted deployment requires a compatible Linux OS and at least minimal Linux administration comfort
  • Licensing is tiered by domain/network count and cluster expansion, which takes some study of the capability matrix to size correctly
  • Hosted SaaS does not relay outbound email — outbound delivery still has to go through the customer's own mail server or service
  • No public information on company founding year, team size, or headquarters
  • Site is a smaller, product-specific vendor site rather than a widely reviewed platform, so third-party review coverage is limited

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