POShield gives resellers, MSPs, and manufacturers an instant green check when a verified buyer emails them. No more spoofed POs. No more fake quotes. Just trust you can see.
The green badge means this buyer is verified on the blockchain. No guessing required.
Scammers spoof email aliases to send fake purchase orders. Resellers ship product. The real buyer never ordered it. Everyone loses.
Three steps. No blockchain knowledge needed. Nothing to install for buyers.
An administrator securely signs in through Google Workspace or Microsoft 365 OAuth. POShield confirms their admin credentials, and the verification is permanently recorded on the blockchain. Schools verify for free. The process takes under five minutes and only needs to happen once.
Once verified, the admin adds the people and departments authorized to send purchase orders. Each buyer gets a role, a spending limit, and can be registered as an individual or a purchasing alias like purchasing@yourschool.org.
When a verified buyer emails a reseller, MSP, or manufacturer, a green verification badge appears right in Gmail or Outlook. Hover over the badge to see the buyer's organization, role, and spending authority. It's an added layer of trust that helps sellers make better decisions faster.
POShield connects the organizations sending POs with the businesses receiving them.
For schools and organizations
For resellers, MSPs, and manufacturers
No green check? Proceed with your normal verification process. POShield adds confidence, it does not replace good judgment.
POShield is designed for organizations that take data protection seriously.
POShield only checks the sender's email address, which is already visible on screen. It never reads subjects, body text, or attachments.
Email addresses are converted to irreversible hashes locally in the browser before any verification check. The blockchain never sees actual email addresses.
All personal data is encrypted at the application level before database storage. Even in a database breach, personal data remains encrypted and unreadable.
Every verification is permanently recorded on the Arbitrum blockchain. Records cannot be altered or deleted by anyone, creating a tamper-proof history of who was verified, when, and by whom.
Only Google Workspace or Microsoft 365 administrators can verify an organization. POShield uses industry-standard OAuth to confirm admin credentials. Regular email users cannot complete verification.
POShield does not collect, store, or process any student data. Full compliance documentation is available on our security page.
Whether you send POs or receive them, POShield has you covered.
Scammers send fake POs using your name. Verify your team so the people you work with can tell the difference.
Verify your school and protect your purchasing team at no cost. Unlimited buyers.
Get Verified FreeFor companies and organizations that send POs to vendors and suppliers.
All plans include individual and alias buyers, spending limits, roles, and email support.
You received a purchase order. Is it real? Install the POShield extension and see verified badges before you ship.
Install the POShield extension and see verified buyer badges in Gmail and Outlook instantly.
Schools verify for free. Organizations start at $49/month. Sellers get the green check instantly.