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SecureStamp
Trust before action. Evidence after execution.

Know what is being asked. Control what can happen next.

SecureStamp helps people understand high-impact requests and lets organizations constrain autonomous software to the exact effects they approve.

Verify what is being requested. Authorize the exact effect. Keep execution inside your control. Preserve verifiable evidence.

What the message asks, first
One exact effect, one use
Evidence you can verify yourself

See available integrations ->

inboxMessages
B

billing@securestamp-signed.com

July invoice

Verified98
A

billing@acme-corp-urgent.com

Update your payment details

Review

Mimics acme.com · no verified seal. Verify through an official channel before paying.

Trust before action. Evidence after execution.

The problem

AI made fake messages look real.

We used to look for visible mistakes: broken logos, strange domains or suspicious wording. Today a scam can be written by AI, sound perfect and arrive through email, WhatsApp, Telegram, QR, support, invoices, tickets or workflows. The problem is no longer only analyzing the message: it is knowing what action it asks for before acting.

Before, the risk was a click. Now it is also that an agent executes an action.

Surfaces

One trust layer, wherever the request arrives.

Origin, intent, execution authorization and evidence are one chain. These are the surfaces it runs on.

Email

Verify senders, domains, headers and links before opening, replying, downloading files or paying.

WhatsApp + Telegram

Confirm whether a number, bot, handle, link or channel belongs to the official perimeter declared by an organization.

Agents, APIs and workflows

Bound what delegated software may change: one exact effect, one authority, one expiry, one use.

Access control limits what software can reach. Execution Authorization bounds the exact effect it may cause — and that holds whether the instruction arrived in an inbox, in a messenger or through an MCP tool call.

How it works

One trust check before action.

01

An origin is declared

An organization registers domains, emails, channels, bots, phones, links or official contact points.

02

SecureStamp checks signals

The system reviews origin, channel, technical signals, registered status and declared intent.

03

You get a clear verdict

Before clicking, replying, paying, sharing data or allowing an agent to act, SecureStamp shows a trust signal.

Official channels

Signal for WhatsApp, Telegram and official channels.

Not everything starts in an email. A sensitive message can arrive from a number, bot, group, link, QR code or support channel. SecureStamp Signal helps verify whether that channel belongs to the official perimeter declared by an organization.

Signal verifies membership in the official perimeter. It does not guarantee that every message is true.

Execution Authorization

Access is not authorization to act.

Giving software access to a system is not the same as approving what it may change there. SecureStamp turns an approved decision into a signed, single-use authorization for one exact effect — and keeps the evidence.

Access

Agent may call the payment processor's refund APIs

Execution Authorization

refund.create

  charge       ch_89172
  amount       USD 1,427.00
  destination  original_payment_method
  maxUses      1
  expires      14:02 UTC
One exact effect, one authority, one expiry, one use.
Your signed policy is the ceiling. SecureStamp cannot widen it.
Provider credentials stay in your environment.
Receipts verify offline, without contacting SecureStamp.
See Execution Authorization

Authorize the effect, not just access to the tool.

Public Beta

Works with the controls you already have. SecureStamp does not replace identity, policy engines or approval workflows — it binds their approved decisions to exact executable effects, at an execution point you keep.

Live trust check

Verify email or domain

Paste an email, domain, channel or payment link. This checks origin — who is sending; what each message asks is read by the plugin on your device.

Available integrations

Integrations where work starts.

Start with email and webmail. Extend toward workflows, APIs and agent checks as your operation matures.

Available

Chrome Webmail

Gmail and webmail

Chrome extension for webmail. Verifies emails in Gmail and supported providers, shows trust signals in the inbox, and lets you send messages with a verified identity stamp.

Downloadv0.6.6
Coming soon

Gmail Workspace Add-on

Workspace Marketplace

Native Gmail add-on for Google Workspace. Designed for Marketplace install and admin deployment, it runs in the Gmail side panel without requiring a browser extension.

Available

Outlook 365

Microsoft 365

Add-in for Outlook 365, Outlook Desktop (2016+) and Outlook Web App. Verifies senders in real-time and lets you insert an identity stamp in outgoing emails. Mass deployment available for organizations.

Available

Outlook Desktop

Windows / Mac

Compatible with Exchange Server 2013+ and Microsoft 365. IT admins can deploy the add-in to the entire organization from Exchange PowerShell or M365 Admin Center in a single command.

Coming soon

Safari Extension

macOS / iOS

Safari Web Extension that verifies any site instantly. Auto-detects the active domain when you open the popup. Compatible with Safari on iPhone, iPad and Mac (Safari 15.4+).

Coming soon

Apple Mail

macOS / iOS

Native plugin for Apple Mail on macOS (Monterey+). Shows the SecureStamp trust badge in every email header. Developer Preview — requires Xcode.

Coming soon

Firefox

Mozilla Firefox

Firefox extension that works in Gmail, Outlook Web and other webmail clients. Compatible with Firefox on Windows, macOS and Linux.

Coming soon

Microsoft Edge

Microsoft Edge

Chromium-based Edge extension. Works in compatible webmail and Outlook Web. Available in the Microsoft Edge Add-ons Store.

For companies

Turn your official channels into verifiable signals.

Register domains, emails, phones, bots and channels so customers, vendors, employees, systems and agents can recognize legitimate communications before replying, paying or sharing information.

  • Official domains and emails.
  • WhatsApp, Telegram, bots and declared channels.
  • Verifiable signals for customers and vendors.
  • Trust checks for digital money operations.
  • Foundation for MCP-ready agents and workflows.
  • Less confusion around AI-generated impersonation.
Register my company
01

Register official domains, emails and channels.

Declare the perimeter your audience should recognize: domains, senders, phones, bots, links and public trust channels.

02

Publish verifiable trust signals.

SecureStamp creates references that customers, vendors, plugins, APIs and agents can query before action.

03

Reduce confusion around AI impersonation.

Give people and systems a practical signal before payment requests, vendor changes and sensitive workflows.

The stamp and the status

The stamp is visual. Verification happens in real time.

Stamp

Cert. Visual

Stamps add a visual and collectible layer to registered identities. But trust does not depend on an image: it depends on the token, registry and live verification.

Status indicator

The plugin or checker shows a simple state: verified, probable, review or high risk. The state is queried in real time against SecureStamp signals.

Live backend

Plugin
→ Backend
→ Estado real

The plugin, checker and backend query the real state of the origin before showing a signal.

Trust states

A simple signal before action.

SecureStamp keeps the user-facing result simple: verified, probable, review or high risk. Technical details remain available when needed.

Verified98/100

billing@securestamp-signed.com

Origin registered and validated by SecureStamp.

spf passdkim passdmarc pass
Probable84/100

news@verolux-store.com

Technical signals look correct, but there is no verified stamp.

spf passdkim unknowndmarc neutral
Review38/100

billing@acme-corp-urgent.com

Signals deserve review before acting.

spf softfaildkim passdmarc none
High risk4/100

noreply@secure-account-verify.top

Possible impersonation, suspicious domain or risky pattern.

spf faildkim faildmarc fail

Visual layer

Stamps are secondary to verification.

Artwork can make registered identities easier to recognize, but operational trust always comes from the live status returned by SecureStamp.

Explore collections at SecureStamp.store →

Pricing

Start free. Register your company when trust becomes operational.

Enterprise is loaded from the backend.

Frequently asked questions

What is SecureStamp?

SecureStamp is a trust layer that helps verify origin, channel and declared intent before a communication becomes an action.

Does it only work with email?

No. Email is one of the first surfaces, but SecureStamp is designed to verify origin, channel and declared intent across multiple points: emails, domains, WhatsApp, Telegram, QR codes, links, official channels, internal systems and agents.

What is SecureStamp Signal?

Signal is the layer for verifying whether a number, bot, handle, link or channel belongs to the official perimeter declared by an organization.

How does it relate to WhatsApp and Telegram?

SecureStamp Signal can check WhatsApp and Telegram channels to see whether they belong to the declared official perimeter. That signal helps before replying, paying or sharing information.

How does this relate to agents and MCP?

SecureStamp is evolving toward trust checks for agents. The idea is that an agent can query trust signals before using tools, processing information, invoking APIs or executing sensitive actions. The technical specification lives on SecureStamp.org.

Does SecureStamp detect fraud?

SecureStamp does not claim to detect every fraud attempt. It helps reduce risk by checking registered origin, channel, technical signals and declared intent before action.

What does verified origin mean?

It means the origin is associated with a registered identity and validated through SecureStamp signals. It does not mean every requested action should automatically be executed.

Does SecureStamp read my emails?

Risk analysis can run locally on the device. Private message content does not need to leave the device to produce a trust signal.

SecureStamp — Know what is being asked. Control what can happen next.