BYOD Security Solutions

Securing personal phones and mobile devices for company business

MailZen - Security App for BYOD

MailZen is the ultimate solution for secure remote working on Bring Your Own Devices (BYOD). It mitigates the risk of utilizing personal mobile devices from malicious attacks by safeguarding both company and personal data, with separate management control for business access and data control. By using a container app, as oppose to a Mobile Device Management (MDM) approach that takes control of the device from the user, Mailzen establishes a secure container for company applications and data, on both iOS and Android devices. By allowing company access only within the container app, Mailzen prioritizes user autonomy by ensuring that company access is confined to its secure interface, and takes no control over a users' mobile device. This approach fosters trust with users and addresses GDPR concerns, providing a seamless and secure experience.

MailZen addresses the pain points of remote access, it mitigates the risk of network hacks and data breaches, ensuring compliance and peace of mind for organizations and employees using their own devices for company business.

MailZen Office365

MailZen allows users to securely work anytime, anywhere from their own mobile device by implementing an IT security layer for work. It prevents them the inconvenience of having to carry a second company device, while saving the company money and IT resource.

PIM container App for Mobile phone

MailZen: Focus on Fundamentals

  • Encrypted Container App for unmanaged mobile devices
  • Enables personal device usage for company business
  • Strict isolation of office and private data
  • Public private key authentication for secure connection
  • No intrusive mobile device management (MDM) agent
  • Full office suite of applications in a single container (including Office 365, E-mail, Encrypted calls, Contacts, Calendar, Document storage as well as Tasks, Notes, Browser, Printer,  and Camera)
  • iOS and Android
  • Securely enabled user activity including Secure Documents and Secure Camera
  • On-premises and Cloud Management Options
  • No mixing (accidental or otherwise) of contacts, images, communications, or data
  • No privacy concerns for personal data (GDPR compliant)
  • No additional company phone required


By allowing employees to use their own devices, Bring Your Own Device (BYOD) strategies allows for significant cost savings, and increases user satisfaction. With MailZen, users can access all of their work content on their preferred mobile device, and administrators can retain complete control of corporate data - without infringing on users’ privacy.

MailZen ensures that all business-critical data is encrypted and remains within a secure container. It’s all accessed via one app and a secure certificate based single sign-on.  It’s perfect for employees as well as contractors and temporary workers.

Key Benefits

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Secure and frictionless access to company data and resources from a personal device - no second company phone required with costs and liabilities.
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Company Email, documents, phone calls, camera,  and more, using a secure containerized app with no cross-contamination between personal and private data.
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Keep full control over company data, no matter how it’s accessed to prevent data breaches. Full secure and authenticated access to remote company end points.
GDPR and TISAX Compliance

GDPR compliant protecting personal data of employees, as well as regulatory compliance for classified data (eg TISAX). No MDM agents installed.


MailZen industry-leading security

  • Certificate-based authorization
  • Secure encrypted communication via TLS
  • End-to-end email encryption with S/MIME
  • Jailbreak detection
  • Remote app lock and wipe
  • Management through a cloud-hosted or on-premises management portal
  • Full data protection
  • Optional secure gateway for internal server access 


The hidden features

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The Secure Gateway protects the On-Premise Exchange server against known and unknown vulnerabilities
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MailZen is the only app in its category that does not share the contacts with the mobile OS while still providing caller-ID
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Provides push notifications without the need to have the Microsoft 365 credentials cached on your mobile device
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Direct access to Intranet without the need for VPN

Easy user onboarding

Onboarding uses couldn’t be easier. Once the MailZen app is downloaded and installed,  the user signs in and gains immediate access. 

MailZen is an integrated single app, providing the users with all the work apps required, including direct access to internal websites approved by IT. It completely takes away the burden of security responsibility of the end-user.

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Quick Demo Mailzen

Secure Container App for BYO Mobile Device Management

A demo of Mailzen from a user perspective. Easy and intuitive to use providing a high-level of security for company data, and privacy for the user against company interference. respecting GDPR regulations.  

MailZen is built for the enterprise around 3 components:

1. MailZen App

The MailZen App stores corporate data, such as emails, contacts and documents, in a single, encrypted container. Corporate data is kept separate from personal apps and data, it does not require managing multiple applications or the device itself. Emails can be encrypted by using S/MIME. The app is easily configured and users simply download the app from the app store.

mailzen gateway

2. MailZen Gateway

The MailZen Gateway secures remote access to company data and ensures that users only access their assigned resources. MailZen Gateway grants access to internal resources via the MailZen App.

3. MailZen Management Portal

The MailZen management portal can be installed on-premises or hosted as a separate tenant in the cloud. Predefined policies orchestrate the access to data and synchronise data to and from the secure, encrypted container on the device. It is, for instance, possible to control the access requirements to the data in the container (e.g. using a PIN-code, password, TouchID or FaceID), the automatic locking of the secure container after a specific time and the wiping of the container in case of problems.

The management portal does not contain any company data, except for the e-mail addresses of the users. Administrators only control the app, not the device. And administrators can never access the company data stored in the secure container.


Enhanced benefits of MailZen

Reducing IT Management Burden

End-user self provisioning:
  • Users will be presented with only ONE app providing direct access to all company data. Email, Calendar, file shares, SharePoint, Tasks and even a browser for direct access to Intranet sites.
Reduced number of management tasks:
  • There is no need to setup and maintain specific security policies. MailZen provides a high security policy as a standard feature. Equal for both Android and IOS.

On-premises Installation

Easy management:

  • MailZen supports a true BYOD strategy even with on-premise MS Exchange server.

High Security:

  • Installation of on-premise Management Portal and inline Secure Gateway. The Exchange server is never exposed to the Internet.

Hybrid Environment: Exchange on-premise / Office365 / Private Cloud

Easy management:

  • One application supporting MS Exchange on-premise and Office365. 
  • Managed access to on-premise, SaaS, OneDrive storage from a single interface.


  • On-premise Management Portal and Secure Gateway. 
  • End-to-End Encrypted sending and saving of files and photos.

Device Agnostic - support for Smartphones, iPads, Tablets

No device policy needed (BYOD, COPE, MDM...)

  • MailZen delivers high standard security on mobile devices. 

No specific OS needed: 

  • MailZen operates on Android and iOS.
  • Frictionless unified user experience


  • Complete separation of personal and business data. 
  • Personal data never visible/accessible by IT-admin
  • Remote access for business email, calendar, contacts, intranet, file storages, ...

Temporary and External Staff

Limited access time to data:

  • MailZen provides full access to all relevant data for external or temporary staff.
  • Allows IT-admin to easily revoke access to the data when the contract is terminated.

Multiple Mail Accounts:

  • You can use multiple accounts via one device. 

Ensuring IT Security Policies

End to End Encryption of Company data:

  • Encrypted connection between the MailZen app and MailZen Gateway.
  • Mutual authentication between server and client.
  • Auto-enrolled certificates verifies user identity eliminating the need for passwords.

No sharing of data from the container with other apps:

  • By default, there is no data sharing between MailZen and the internal OS of the mobile device. 
  • The Secure Camera feature prevents photos are stored outside the MailZen App. 
  • Protected Caller ID; contact details within the Exchange server are never synchronized with the local apps on the device. Normal Caller ID functionality remains.

Compliance fulfillment (GDPR, VS-NfD,  NATO RESTRICTED, TISAX®:

  • Encryption of data at rest and in transit

Discover how MailZen can help: