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SPECIFICTION
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Secure Message

secure-message.io

From $57.50/mo Free plan WebLinuxSelf-hosted
Visit secure-message.io
Spec score 8.2 #13 of 31 in Email Encryption Software

What it is

Secure Message is a self-hosted inbound email gateway that filters mail before it reaches an existing mail server. Its Community features include Postfix content filtering, spam scoring, DNSBL, SPF, DKIM and DMARC checks, quarantine, mail logs and administrator MFA. Professional adds a recipient web portal: recipients open protected messages with a one-time code, without an account or app. Its rules can encrypt, redirect or block sensitive outbound messages, and recipient checks can use SMTP callout, LDAP or directory lookups. Stored messages, attachments and quarantine use Fernet encryption with AES-128-CBC and HMAC-SHA256; the key remains on the customer host. Access controls include TOTP administrator MFA, role-based access and audit logging, with logs exportable to CSV. Enterprise adds AI Autopilot tuning, eDiscovery and archive search, DLP and disclaimers; Autopilot and the classifier are off by default. The gateway can sit in front of Microsoft 365 or an existing mail server without mailbox migration. The single-node appliance runs on Debian 13, with 2 vCPU and 4 GB RAM recommended as a starting point.

Spec sheet

Product
Secure Message is a self-hosted inbound email gateway that filters mail before it reaches an existing mail server.Read 8 Oct 2026 · secure-message.io
Intended users
The maker describes the product for healthcare, finance and legal teams, MSPs, internal IT teams and compliance-driven organizations.Read 8 Oct 2026 · secure-message.io
Free plan
YesRead 20 Sep 2026 · secure-message.io
Trial
The maker says users can request a scoped trial with engineering but does not state a trial duration.Read 8 Oct 2026 · secure-message.io
Integrations
The gateway can sit in front of Microsoft 365 or an existing mail server, using MX routing and outbound smart-host relay without mailbox migration.Read 8 Oct 2026 · secure-message.io
Support
Community includes community support, Professional includes business-hours support, and Enterprise includes priority support and an SLA.Read 8 Oct 2026 · secure-message.io
Company
Secure Message is identified as a Rubix Technology LLC product.Read 8 Oct 2026 · secure-message.io
Access and audit
The product supports TOTP administrator MFA, role-based access and audit logging, with logs exportable to CSV.Read 8 Oct 2026 · secure-message.io
Admin access controls
YesRead 20 Sep 2026 · secure-message.io
Community features
Community includes Postfix content filtering, spam scoring, DNSBL, SPF, DKIM and DMARC checks, quarantine, mail log and administrator MFA.Read 8 Oct 2026 · secure-message.io
Deployment requirements
The single-node appliance runs on Debian 13 and the maker recommends starting with 2 vCPU and 4 GB RAM.Read 8 Oct 2026 · secure-message.io
Encryption
Stored messages, attachments and quarantine are encrypted with Fernet using AES-128-CBC and HMAC-SHA256, with the key held on the customer host.Read 8 Oct 2026 · secure-message.io
Enterprise features
Enterprise adds AI Autopilot tuning, eDiscovery and archive search, DLP and disclaimers; Autopilot and the classifier are off by default.Read 8 Oct 2026 · secure-message.io
Message expiry
YesRead 20 Sep 2026 · secure-message.io
Outbound protection
Professional rules can encrypt, redirect or block sensitive outbound messages, including holding them for the recipient portal.Read 8 Oct 2026 · secure-message.io
Recipient verification
Professional can reject mail to nonexistent users using SMTP callout, LDAP or directory lookups.Read 8 Oct 2026 · secure-message.io
Secure delivery
linkRead 20 Sep 2026 · secure-message.io
Secure recipient portal
Professional recipients open protected messages in a web portal using a one-time code, without creating an account or installing an app.Read 8 Oct 2026 · secure-message.io

Plans and prices

Professional $690 a year $690 / year; billed annually 10 domains · up to 10 users · business-hours support Read 8 Oct 2026 · secure-message.io
Enterprise $1,490 a year $1,490 / year; billed annually Unlimited users and domains · priority support and SLA Read 8 Oct 2026 · secure-message.io
Community Free Free 1 domain · up to 1 user · one administrator · Community support Read 8 Oct 2026 · secure-message.io

Every Secure Message plan and price →

Strong points and limits

Strong points

  • Filters inbound mail before it reaches an existing server.
  • Professional portal uses one-time codes without recipient accounts.
  • Encryption key is held on the customer host.
  • Role-based access, administrator MFA and audit logging.
  • Can sit in front of Microsoft 365 without mailbox migration.

Limits

  • Single-node appliance runs on Debian 13.
  • Maker recommends starting with 2 vCPU and 4 GB RAM.
  • Professional costs $690 a year.
  • AI Autopilot and classifier are off by default.

Who it suits

It is aimed at healthcare, finance and legal teams, MSPs, internal IT teams and compliance-driven organisations that need a self-hosted mail gateway. It requires a Debian 13 appliance deployment and can route mail ahead of Microsoft 365 or an existing server.

Verdict

Secure Message offers layered inbound filtering and outbound controls in a self-hosted gateway, with additional recipient portal and enterprise features by plan. Confirm that the Debian deployment and recommended starting resources fit the intended mail environment.

Where Specifiction places it

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