SecureStamp — Email Verifier

Check in seconds whether an email is legitimate. Detect phishing, impersonation, and fake domains.

ecureStamp adds a visible digital trust seal to your outgoing emails, so recipients can verify in one click that a message truly came from you — unaltered, authenticated, and certified. In the AI era, anyone can spoof your email address or clone your signature in seconds. SecureStamp fixes this with a visible, cryptographically signed stamp that no impersonator can fake. KEY FEATURES - Verified Sender Seal — each email you send includes an interactive SecureStamp badge linked to your verified identity - Tamper-proof attachments — if a PDF or invoice is modified in transit, the seal breaks and the recipient is alerted - 5-level trust model — from basic domain checks (L4) up to notarially certified sender identity (L5 Certified) - One-click verification — recipients verify authenticity at securestamp.org with no extension required - Works with Gmail — native integration, no change to your workflow - No blockchain, no crypto wallet — standard ES256 cryptography, simple and fast WHO IS IT FOR Freelancers and creators who need clients to trust their invoices and contracts. Small businesses protecting their domain from spoofing attacks. Agencies and consultants securing proposals and client communications. Enterprise teams preventing executive impersonation (CEO fraud). HOW IT WORKS 1. Install the extension and connect your SecureStamp account 2. Send emails as usual — the stamp is applied automatically 3. Recipients see a verified seal and can confirm authenticity instantly at securestamp.org Start free at securestamp.online Protocol documentation at securestamp.org Stamp collections at securestamp.store