Mailproven

MailProven is a security-focused Microsoft Outlook add-in designed to help users verify email integrity and build trust in everyday email communication.

The add-in generates a compact, encoded email fingerprint from selected character positions within the email body at the time the message is sent. This fingerprint represents the original content and is securely stored for later verification.

When a recipient opens the email, MailProven re-analyzes the message by regenerating the fingerprint and comparing it with the stored record. This allows users to quickly confirm whether the email content matches the original message.

MailProven is suitable for professionals, teams, and organizations that rely on Outlook for approvals, compliance-related communication, operational instructions, and other important messages. It helps reduce uncertainty caused by accidental edits, forwarding-related changes, or potential content manipulation.

Licensing and subscription information:

MailProven requires an active subscription to use its core verification and fingerprint storage features. The add-in connects to an associated backend service that manages fingerprint generation, storage, and validation.

Users may install the add-in from Microsoft AppSource, but access to full functionality is available only after activating a valid license or subscription. Subscription plans, pricing, and feature availability are managed outside of Microsoft AppSource and may vary based on usage or organization size.

Key features include:

• Email integrity verification using secure fingerprinting.
• Generation, storage, and retrieval of email fingerprints.
• Verification of received emails against original content.
• Visual status indicators using Outlook categories (for example, Fingerprint Saved and Fingerprint Verified).
• Seamless integration with Microsoft Outlook through a task pane interface.

MailProven helps knowledge workers, compliance-aware teams, IT administrators, and businesses gain greater confidence in the authenticity and consistency of their Outlook email communications—while maintaining existing workflows.