Secure and protected email

Encrypt your confidential emails

Deltagon Secure Mail is an easy, non-intrusive and highly secure email encryption solution embedded in your existing email services to protect confidential email communications.

Looking for a comprehensive e-Communications solution? View the entire Deltagon Suite.

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Best-of-breed user experience – no changes to the way you use email

No extensive training sessions for the users. Use email just like before. Just add an 's' and the encryption is on.

Fulfils the most demanding security needs

End-to-end encryption and protection from sender to recipient.

Non-intrusive onboarding for all email systems

All email service providers supported, including Outlook, Gmail and Apple Mail.

Deltagon Secure e-Communications Suite

View the entire e-communications bundle that secures your email, forms, signatures and workspaces.
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Sending unencrypted emails is like sending confidential information on a postcard

  1. Email is still the most commonly used tool for business communications because of its ease of use and accessibility, regardless of the security limitations of the Simple Mail Transfer Protocol (SMTP) protocol - the standard communication protocol for electronic mail transmission. 
  2. Many webmail solutions have native encryption, but the communications can still become unencrypted on their way to the recipient, making them vulnerable to misuse.
  3. Traditional Transport Layer Security (TLS) is a cryptographic protocol providing communications security over a computer network. However, it often lacks complete end-to-end encryption.

Choose uncompromising email security


Straightforward email encryption for large files

Send and receive secure emails to and from any recipient – without installing agents on endpoints. Allow a third party easily start secure communications, for example, from your company website – even exceptionally large files reach the destination securely.


Flexible classification options

Classify confidential information and  adjust security levels according to your policies to define how information can be shared. Apply extra security checks (like multi-factor authorization, MFA) when needed.


Prevent email data leaks

Ensure the security of confidential emails while mitigating the risk of human error with email data loss prevention (DLP).

Deltagon Secure Mail analyzes email traffic and recognizes confidential information, such as personal identification numbers (PIN). Based on your policy, you can prevent such emails from being sent or automatically encrypt them. 


Isolated secure network

Use transparent, secure email messaging with the SSH network service. Give customers and interest groups an opportunity for completely transparent confidential electronic communication within a secure network maintained by us.


Who benefits from email encryption?

All organizations using email to communicate with their partners, customers and employees should consider protecting their email traffic.

Our customers typically protect the following type of highly confidential and sensitive information: 

Financial information, Recruitment, HR, Business development, Product development, Customer information, Marketing strategies, Service requests, Offers, Pricing information, Confidential project files, User credentials and/or passwords.

Main features

Ease of use

  • No need for user accounts
  • Multiple levels to identify the recipient
  • Interoperates with any email system without changes to the user experience
  • A browser based interface for 3rd party initiated messaging

Authentication and Security

  • Recipient authentication using passwords, SMS and trusted network providers
  • Support for Email security protocols (DMARC / DKIM / SPF )
  • Support for a S/MIME based encryption
  • On-premise deployment ensuring your data remains in your control

Customer cases

Learn more about how our customers have successfully secured their email communications with Deltagon Secure Mail.

Deltagon Secure Mail case studies