Data Authentication

Solutions for Email Service Providers

Solutions for Email Service Providers

Guardtime email solutions transparently work with existing messaging platforms to support message integrity validation and provide a full audit trail for all communications.

We spend tens of billions of dollars a year shifting paper documents around the globe because we can´t easily validate their electronic equivalents. Email messages are susceptible to phishing, erratic spam filters and man-in-the middle attacks. Recipients just can’t be certain that the electronic message received is what it seems to be. So time and again we turn back to paper to deliver that agreement draft, invoice, bank statement.

Guardtime messaging solutions give service providers and enterprises tools to attach proof of sender, time and message integrity to the regular email message and accompanying attachments – transparently to the sender and conveniently verifiable by the recipient. As a sender, you can also verify whether your message was received and prove exactly when that happened.

There are two solutions in Guardtime for Messaging family that can be deployed either together or separately:

cMail | email solution providing verification of sender, time and message integrity
cBox | electronic document delivery solution providing proof of delivery

Keyless Signature based messaging solutions – cMail and cBox – are either deployed inside the organization or delivered to the end-users by telecommunications service providers. Please see the list of Guardtime partners for more information or contact us to become a partner yourself.

mail Solutions for Email Service ProviderscMail – Email for Business

GuardTime´s Keyless Signature technology transforms regular email into tamper-evident messaging solution with full audit trail and built in:

  • verification of the sender
  • verification of the sending time
  • verification of the message integrity

The cMail solution can be configured to be completely transparent for the sender, who can continue to use their preferred email client, or the features can be invoked on-demand, as needed. Out-of-the-box, the cMail solution is integrated with:

  • SMPT compatible email servers
  • Microsoft Exchange servers
  • Lotus Notes servers

To add capability of verifying whether the message has been read, cMail can be deployed in conjunction with cBox, a tamper-evident electronic document delivery solution.

Solution Benefits:

  • Anti-Phishing Protection

Nobody can send your customer an email and claim to be you, when the real sender can easily be verified by the recipient.

  • Spam Filters Love cMail

With known and verified sender, your emails are far less likely to end up in a recipient’s junk-mail folder.

  • Email Becomes a Trusted Delivery Channel

Since the contents of the cMail, along with its attachments can be independently verified, there is no reason to print out your next agreement draft and turn to DHL for “speedy” delivery. More trees, clearer air. Not to mention much less costs.

  • Internal and Regulatory Compliance Strength

The proof of cMail integrity is portable and can be verified wherever the cMail is forwarded or copied, whenever, forever.

  • Transparent Add-on Solution

The cMail messaging solution is a stand-alone add-on for your existing email infrastructure and workflow – nothing to replace. Existing integrations include generic SMTP, Microsoft Exchange and Lotus Notes

Further Information:

Contact us for more info


mail Solutions for Email Service ProviderscBox – Verified Document Delivery

We spend billions of dollars every year to shift around paper documents because we want to be sure that our message has been been delivered to the recipient. We want proof and electronic equivalents just have not been able to deliver that at the same level as the signature on the delivery receipt does.

cBox is essentially a cloud storage and document sharing platform – think Dropbox or Evernote – driven by an email interface where every certified correct document is sent straight to the sharing platform  signed with Guardtime keyless signature. This offers a next-generation messaging solution with an end-to-end audit trail, benefiting both the sender, as well as the recipient with complete proof of sender, time, delivery etc.

Solution Benefits:

  • Evidentiary Quality Read-receipts

Sender will know, and will be able to prove, whether the recipient has opened the sent message or not.

  • Convenient and Organized Life

The service alerts the recipient over SMS and/or regular e-mail when a cMail is waiting, All received messages and attachments are automatically organized into specific folders and synced with any recipients devices, if desired.

  • cBox is Free Value Added Service

cBox is free for end-users receiving cMail’s and provides additional value as a cloud-based file storage and sharing service.

Further Information:

Contact us for more info