Email Encryption

Secure, Track & Control your emails

Free Trial


Information security issues are becoming increasingly important for businesses of every size and in every industry. Adding protection to information shared via email is critical. What does your business share through email?

KeyEncrypt (powered by Cirius) is an advanced email encryption service which works with any email environment, is easy to set up, and simple to use. Create a secure email environment for your employees within minutes. Useful features such as message tracking, true message recall, large file attachments and data leak prevention technology are all included. Plus, benefit from our 24/7 UK support team, on-hand to help you when you need it.

Free 30 Day Trial

Check out features

  • Secure

  • Compliant

  • Easy

  • 24/7 Support


KeyEncrypt is far more than traditional encrypted email. It’s a secure email platform that empowers greater collaboration and productivity. In today’s data-intensive business environments, KeyEncrypt is a critical platform for any company that handles any type of sensitive information. Businesses can simply and securely send, receive, track and control email communications with anyone on any device using existing email addresses and without changing infrastructure. The platform works perfectly with Office 365 plans that include email and our Hosted Microsoft Exchange packages.

Download Overview

  • Advanced Encryption

    128bit SSL and 256bit AES at rest encryption

  • Secure Communication

    Securely send, receive, track and control communications

  • Email Tracking

    Notifications, revoke email, disable replies, password protect

  • Large File Sharing

    Users can quickly share files up to 5GB

  • Data Loss Prevention

    Intelligent keyword scanning based on your security policies

  • Fully Integrated

    Outlook, Office 365, Chrome, mobile & tablet integrations

  • Cost Effective

    Savings compared to in-house systems & no maintenance required

  • User Friendly

    Simple for end-users and easy to set-up


We keep our pricing simple, with free 24-hour UK support included as standard. KeyEncrypt is available to all customers no matter what email platform they are using. Once ordered you will automatically receive an invitation to set up your secure email account, as well as simple instructions on how to add KeyEncrypt to your chosen platform.

Note: Minimum of 3 users required.

  • KeyEncrypt - Monthly

    3 users min. Encryption, advanced tracking, 5GB file transfers

    $11.99 per user


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Don’t Just Take Our Word…

Here’s what our customers have to say about SMS

SMS gave us the ability to run our email system exactly as we did when when we hosted our own Exchange server but with the added benefit of removing the single point of failure which our own system had.

Gary WandPygott and Crone
Betinternet logo

The support is second to none. SMS provide a very good package and if we were to setup again from scratch then SMS would be at the top of the list.

Peter GoodwinBet Internet

Want to know more about email encryption?

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Why Choose SMS?

  • 24/7

    support available to all customers

  • ISO 9001 & 27001

    Certified to the highest international standards

  • 350,000,000

    emails hosted on our UK servers

  • Gold Partner

    for hosting with Microsoft

Certified Partners

partner microsoft
partner cisco
partner blackberry-3
partner dell
partner enom
partner netapp
partner nominet
partner parallels
partner sagepay
partner telecitygroup
partner vmware
partner zimbra