Verify before you pay. Verify before you ship.

POshield checks the sender's address on every message against the companies you've connected with. It flags the ones that don't match and verifies the ones that do. Right inside Gmail and Outlook.

POshield flags it. You make the call.

Inbox
Dana Kwon ✓ VerifiedPO 3311 for the lab refresh
Maria Reyes ⚠ MismatchInvoice 4892, remittance details changed
Weekly DigestYour industry roundup
⚠
This domain imitates one you work with
The sender is wiIdcatcontractors.com, not wildcatcontractors.com. A capital i is standing in for a lowercase L.
Confirm any payment or order change by phone, using a number you already have.
Verified means their own organization authorized this person and you are connected.
Mismatch means the address resembles a company you trust but is not it. The note above says what differs.
No badge means not connected. It is not a verdict either way.

The email looked right. That was the problem.

Before you pay
$545,598
Surfside Beach, South Carolina · March 2026

A scammer registered a domain one character off from the town's contractor, joined an email thread already in progress, and asked to switch a payment from a check to a transfer. Nobody was hacked. The money went to Utah, and it took 45 days to notice.

POshield flags a one-character-off domain the moment the message is opened.

Before you ship
$300,000
An education technology reseller · near miss

A purchase order arrived from a real school's domain, with the real shipping address, from senders who answered the phone. The school didn't know an old alumni account had been compromised.

Careful staff caught it in time. With POshield there would have been no green check, because an alumni account is never authorized to send purchase orders.

Built from your own partner list

Lookalike detection compares each sender's address against the companies you've connected with, not a generic blocklist. It knows which domains you trust, so it can spot the ones designed to be mistaken for them.

Both directions

Your verified people carry a green check when they email your connections, and you see who is verified when they email you. One connection protects both sides.

Automates what the FBI recommends

The FBI advises checking whether a reply would go somewhere other than the sender. POshield does that on every message and flags it when it happens.

Get Verified · Free

Be seen as the real you

Register the people authorized to send POs, invoices, and payment requests. Their details are encrypted before they are stored.

Maria Reyes✓ Verified
Get Verified, Free
See Who's Verified · Paid seats

See who's real in your inbox

Your team installs the extension and signs in once. One seat per person who needs to see verified senders.

maria@lincolnschools.org✓ Verified
See pricing

Want the full picture, including how connections work and how to bring your vendors on? How it works

What POshield can't do

  • If a criminal takes over the actual mailbox of the actual authorized person and sends from it directly, no inbox tool can tell. POshield flags the case where they redirect replies elsewhere, which is how these usually work.
  • Desktop browser only. Nothing appears in phone email apps.
  • Outlook shows the mismatch pill and its hover reason. The banner is in progress.
  • Confirm any payment or order change by phone, using a number you already have.

What it never touches

  • Message bodies, subject lines, attachments. It reads the sender's address and the reply-to address, nothing else.
  • Your partner list stays on our servers. The extension sends one address and receives one verdict. Compromising a user's mailbox doesn't expose who you work with; that takes the admin account.
  • There is no POshield password to create. Sign in happens entirely through Google Workspace or Microsoft 365.
  • Only irreversible hashes go on the blockchain. Names and addresses are encrypted in our database and never written to the chain.
Full security details

Per-seat pricing, nothing hidden

Getting verified is free for any organization. You pay only for the people who need to see verified senders in their inbox.

MonthlyAnnualSave approx. 17%

Solo

1–2 seats

$29/mo per seat
billed annually
Most popular

Starter

5 seats

$99/mo
billed annually
$19.8 per seat / month

Growth

25 seats

$399/mo
billed annually
$15.96 per seat / month

Enterprise

100 seats

$1,399/mo
billed annually
$13.99 per seat / month

More than 100 seats, or one more seat on any plan: email support@poshield.com.

The next invoice that asks you to pay differently: know who sent it.

Getting verified costs nothing. Start there.