Certify and Send
e-PostclicTM plugs straight into Gmail and Outlook to automatically certify every email you send, without changing the way you work.
Sending, timestamping, content and receipt are all tracked, turning every message into legally admissible proof.
You send a standard email, e-PostclicTM guarantees its legal value.
- Certified and timestampedIndisputable proof of sending and content
- Recorded in the blockchainGuaranteed protection against message tampering
- Fast and automaticInstant certification, with nothing to do
- Affordable and preventiveAvoid disputes with reliable proof at a low cost
e-Postclic™ Extension Features
All the features you need to certify your emails.
Automatic Certification
Each email is automatically certified upon sending, without any additional action on your part.
Timestamped Proof
Certification timestamp via an independent time server. Legally guaranteed evidential value.
Native Integration
Integrates directly into your Gmail or Outlook interface. No technical configuration required.
Secure Archiving
Every message is archived for 10 years with its complete proof file, accessible at any time.
How does it work?
e-PostclicTM turns your everyday emails into certified ones, without changing the way you work.
The extension plugs straight into Gmail and Outlook to automatically secure the proof, traceability and integrity of every message you send.
I add the e-PostclicTM extension
In Gmail or Outlook, straight from the official store, with no technical setup and no help from IT. It fits into my existing mailbox right away.
I send my emails
Every message I send is automatically certified, timestamped and sealed, with no extra step, no special handling and no change at all to my daily routine.
My proofs are recorded
Each proof is kept and recorded in the blockchain. I can find it again at any time and download the proof file should a dispute arise.
Important: what you should know about e-PostclicTM
e-PostclicTM certifies the sending and the integrity of emails; it does not replace the legal obligations attached to certain contracts. The proof covers the sending, the timestamp and the content of the message, regardless of any reply from the recipient.
Postclic is a private, independent company with no capital or legal ties to Gmail, Google, Outlook or Microsoft. The service must be used in accordance with the laws and practices applicable in each country.
Standard Email vs e-Postclic™
To measure the real difference between a standard email and a certified digital send, here's a clear summary of the benefits you get with e-Postclic™.
| Criterion | Without e-Postclic™ | with e-Postclic™ |
|---|---|---|
| Proof of Sending | No proof | Timestamped proof |
| Traceability | No visibility | Real-time tracking |
| Legal Value | Almost none | Evidency Certification |
| Archiving | Risk of loss | Automatic 10 years |
| Cost | Fees + printing | Paperless |
| Integration | Standard | Direct Extension |
Numbers That Speak for Themselves
+150
Countries Covered
Certified sends everywhere in the world
< 1s
Speed
Email certified in less than one second
10 years
Of Legal Archiving
Every message preserved with evidential value
99.9%
SLA Availability
High-availability infrastructure guaranteed
Frequently Asked Questions
Everything you need to know about the e-Postclic™ extension.
Does the extension change how I send emails?
No, you send your emails normally. The extension automatically certifies each message in the background, without changing your workflow or usual interface.
Is it compatible with Google Workspace and Microsoft 365?
Yes, the extension is compatible with all Gmail accounts (personal and Google Workspace) and Outlook (personal and Microsoft 365 professional).
Where are my proofs stored?
Your proofs are archived on secure servers in Europe for 10 years. They are accessible at any time from your Postclic account.
How much does email certification cost?
Certification starts at €0.49 per certified email. Monthly plans are available for high-volume sending.
Does the extension work on mobile?
The extension is currently available on desktop browsers (Chrome, Edge, Firefox). A mobile app is in development.