Xaccel Email Trust & Verification Gateway is a secure outbound email relay service designed for MSPs and businesses that want to reduce impersonation risk, increase recipient trust, and provide a simple way to verify sensitive emails.
Everything you need to secure your outbound email communications and build recipient trust
Mail clients, applications, ticketing systems, and invoicing platforms submit outbound email using authenticated SMTP on port 587 with STARTTLS encryption.
Each customer has isolated configuration, sender domain rules, and rate limits to prevent cross-tenant spoofing and abuse.
Every outbound email includes a unique "Verify this message" link, allowing recipients to confirm legitimacy instantly.
Recipients click the link to view a verification page showing sender, recipient, subject, timestamp, and verification status.
Supports modern MIME email structures, preserving PDFs, invoices, screenshots, and inline logos for real-world MSP communications.
Verification events and sending metadata are logged for compliance, investigation, and customer assurance.
No IP-allowlisting required. Supports customer environments where IP-based connectors are not permitted using modern authentication methods.
Compatible with Microsoft 365, Google Workspace, and on-premises Exchange/SMTP servers without migration.
Simple, secure, and seamless integration with your existing email infrastructure
Customer mail clients or systems submit email to the Xaccel Gateway using authenticated SMTP (587 + STARTTLS).
The gateway injects a unique verification code and verification link into the email automatically.
The message is relayed outbound through the customer's existing email platform (Microsoft 365, Google Workspace, or on-prem SMTP).
The recipient can click the verification link to confirm authenticity on the Xaccel verification portal. Records expire automatically and lookups are logged.
Perfect for high-trust communications that require verification and security
Support communications and ticket updates with verified authenticity for customer confidence.
Secure invoice delivery and payment requests that recipients can verify before taking action.
Critical security alerts and incident communications with verifiable authenticity.
Onboarding messages and credential handoff emails with verification for security.
High-trust executive and finance correspondence that requires verification.
Regulatory and compliance-related communications with audit trails and verification.
Choose the plan that fits your organization's size and needs
Protect your business and build trust with every email you send
Significantly reduces successful phishing attempts and business email compromise attacks by providing verification.
Builds recipient trust for invoices, payment requests, and security communications with verifiable authenticity.
Helps customers demonstrate professionalism and security maturity to clients and partners.
Works without migrating mailboxes or changing email hosting providers - integrate seamlessly.
Provides an easy upgrade path to full domain authentication projects (DMARC, DKIM, BIMI).
Meet compliance requirements with comprehensive audit logging and verification records.
Get started with Xaccel Email Trust & Verification Gateway today. Our team will help you set up and configure your secure email relay in minutes.