# Which secure emails providers are worth trying?

Choosing a trusted and secure email provider is particularly important in a business context. But private users should also pay close attention to how their data is handled, where it is stored, and how well it is protected.

## How 7 of the most secure email providers compare to each other

<table>
  <thead>
    <tr>
      <th>Provider</th>
      <th>Data Protection</th>
      <th>Encryption</th>
      <th>Virus/Spam Protection</th>
      <th>Features</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><strong>IONOS</strong></td>
      <td>Very Good</td>
      <td>TLS, external encryption possible (e.g. PGP)</td>
      <td>Very Good</td>
      <td>- Own Domain
- Ad-free
- AI Features
- Archiving</td>
    </tr>
    <tr>
      <td><strong>Zoho Mail</strong></td>
      <td>Very Good</td>
      <td>TLS, optional S/MIME (paid plans)</td>
      <td>Very Good</td>
      <td>- Own Domain
- Ad-free
- Admin Controls</td>
    </tr>
    <tr>
      <td><strong>ProtonMail</strong></td>
      <td>Excellent</td>
      <td>TLS, End-to-End Encryption (default)</td>
      <td>Very Good</td>
      <td>- Anonymous Registration
- App
- Open Source</td>
    </tr>
    <tr>
      <td><strong>TutaMail</strong></td>
      <td>Excellent</td>
      <td>End-to-End Encryption (automatic)</td>
      <td>Very Good</td>
      <td>- Calendar
- Anonymous Use
- Open Source</td>
    </tr>
    <tr>
      <td><strong>Mailbox.org</strong></td>
      <td>Very Good</td>
      <td>TLS, PGP</td>
      <td>Very Good</td>
      <td>- Office Integration
- Calendar
- Ad-free</td>
    </tr>
    <tr>
      <td><strong>Infomaniak</strong></td>
      <td>Very Good</td>
      <td>TLS, no native end-to-end encryption</td>
      <td>Very Good</td>
      <td>- Collaboration Tools
- Cloud Storage
- Custom Domain</td>
    </tr>
    <tr>
      <td><strong>StartMail</strong></td>
      <td>Very Good</td>
      <td>TLS, PGP</td>
      <td>Good</td>
      <td>- Ad-free
- One-Time Addresses</td>
    </tr>
  </tbody>
</table>

## Why are secure email providers important?

Without proper protection, email content can be intercepted, manipulated, or misused. Secure email providers help protect against cyberattacks such as phishing and malware, ensuring that [personal data](https://www.ionos.co.uk/digitalguide/websites/digital-law/personal-data/) remains protected.

Under UK data protection law, including the UK GDPR and the Data Protection Act 2018, organisations must ensure that personal data is handled securely and transparently. Encryption helps keep communication private, while spam and virus protection reduces security risks. Reliable providers also offer backup and archiving options to prevent data loss and support business continuity.

## How to choose a secure email provider

Many providers claim to offer secure email services, but not all meet the same standards. When choosing a provider, you should consider the following criteria:

- **Encryption technologies** ([TLS/SSL](https://www.ionos.co.uk/digitalguide/server/security/tls-vs-ssl/), [PGP](https://www.ionos.co.uk/digitalguide/e-mail/e-mail-security/e-mail-encryption-with-pgp/), end-to-end encryption): Emails should be protected in transit using TLS and, ideally, with additional encryption such as PGP or full end-to-end encryption to prevent unauthorised access.
- **Data protection and server location**: A reputable provider should comply with UK data protection laws and ideally host data in the UK or EU, where strong privacy frameworks apply.
- **Security features** (spam filters, virus protection, two-factor authentication): Powerful spam and virus filters, as well as [two-factor authentication (2FA)](https://www.ionos.co.uk/digitalguide/e-mail/e-mail-security/two-factor-authentication-protection-for-your-accounts/), provide extra protection against [phishing](https://www.ionos.co.uk/digitalguide/server/security/what-is-phishing/), [malware](https://www.ionos.co.uk/digitalguide/server/security/malware/) and unauthorised access.
- **Privacy policies and data handling**: Look for providers that are transparent about how they handle user data and avoid business models based on advertising or data sales.
- **Additional features**: Business users benefit from features like domain-based email addresses, secure archiving, calendars and cloud storage.

## What are 7 of the most secure email providers out there?

Here are seven of the most secure email providers for UK users, offering a balance of privacy, security and a range of practical features.

### IONOS

[IONOS](https://www.ionos.co.uk/ "IONOS") offers secure email solutions designed for businesses, freelancers and professionals. The platform includes TLS encryption, built-in spam and virus protection and support for **custom domains**. With data centres in Europe, IONOS operates in line with UK and EU data protection standards and provides a reliable, ad-free environment. Email archiving, migration tools and optional [AI](https://www.ionos.co.uk/digitalguide/online-marketing/online-sales/what-is-artificial-intelligence/) tools make it a strong choice for professional use.

<table>
  <thead>
    <tr>
      <th><strong>Advantages</strong></th>
      <th><strong>Disadvantages</strong></th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>Strong spam and virus protection</td>
      <td>No free plan</td>
    </tr>
    <tr>
      <td>Secure email transmission via TLS</td>
      <td>Primarily business focused</td>
    </tr>
    <tr>
      <td>Supports external encryption (e.g. PGP)</td>
      <td></td>
    </tr>
    <tr>
      <td>No ads, emails are not used for advertising</td>
      <td></td>
    </tr>
    <tr>
      <td>Custom domain included</td>
      <td></td>
    </tr>
  </tbody>
</table>

### Zoho Mail

[Zoho Mail](https://www.zoho.com/mail/ "Zoho Mail Website") offers a secure email environment tailored to business use. It protects emails in transit using **TLS encryption** and supports **[S/MIME](https://www.ionos.co.uk/digitalguide/e-mail/e-mail-security/smime-the-standard-method-for-e-mail-encryption/) encryption** for message-level protection on paid plans. In addition to encryption, Zoho provides **advanced spam filtering, malware protection, and administrative security controls**, making it a strong option for organisations that need to manage users and data securely. Data can be hosted in EU data centres, which helps support UK data protection requirements.

<table>
  <thead>
    <tr>
      <th><strong>Advantages</strong></th>
      <th><strong>Disadvantages</strong></th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>TLS encryption and optional S/MIME</td>
      <td>No default end-to-end encryption</td>
    </tr>
    <tr>
      <td>Strong spam and malware protection</td>
      <td></td>
    </tr>
    <tr>
      <td>Advanced admin and security controls</td>
      <td></td>
    </tr>
    <tr>
      <td>Ad-free, no use of emails for advertising</td>
      <td></td>
    </tr>
  </tbody>
</table>

### ProtonMail

[ProtonMail](https://proton.me/mail "ProtonMail Website") is designed specifically for secure communication. It uses **end-to-end encryption by default**, ensuring that only the sender and recipient can read email content. In addition, ProtonMail applies **zero-access encryption**, meaning even the provider itself cannot access stored messages. ProtonMail is [open-source](https://www.ionos.co.uk/digitalguide/server/know-how/what-is-open-source/) and follows a **minimal logging approach**, meaning [IP addresses](https://www.ionos.co.uk/digitalguide/server/know-how/what-is-an-ip-address/) are not used for tracking or advertising purposes under normal operation.

<table>
  <thead>
    <tr>
      <th><strong>Advantages</strong></th>
      <th><strong>Disadvantages</strong></th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>End-to-end encryption by default</td>
      <td>Limited storage in free plan</td>
    </tr>
    <tr>
      <td>Zero-access architecture (provider cannot read emails)</td>
      <td>Limited business integrations</td>
    </tr>
    <tr>
      <td>Open-source apps (transparent security model)</td>
      <td></td>
    </tr>
    <tr>
      <td>Strong spam and phishing protection</td>
      <td></td>
    </tr>
  </tbody>
</table>

### TutaMail

[TutaMail](https://tuta.com/secure-email "TutaMail Website") focuses on comprehensive encryption of email data. It provides **automatic end-to-end encryption**, including **subject lines, message content, and attachments**, without requiring manual setup. Unlike many providers, TutaMail encrypts more than just the message body and follows a **privacy-focused approach without tracking or advertising**. With infrastructure based in Germany, it operates under strong European data protection standards, making it a solid choice for users who prioritise privacy.

<table>
  <thead>
    <tr>
      <th><strong>Advantages</strong></th>
      <th><strong>Disadvantages</strong></th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>End-to-end encryption by default</td>
      <td>Limited storage in free plan</td>
    </tr>
    <tr>
      <td>Zero-access architecture (provider cannot read emails)</td>
      <td>Limited business integrations</td>
    </tr>
    <tr>
      <td>Open-source apps (transparent security model)</td>
      <td></td>
    </tr>
    <tr>
      <td>Strong spam and phishing protection</td>
      <td></td>
    </tr>
  </tbody>
</table>

### Mailbox.org

[Mailbox.org](https://mailbox.org/en/ "Mailbox Website") offers secure email alongside integrated collaboration tools such as calendars and document editing. It is designed for both professionals and organisations that need more than basic email functionality. Mailbox.org supports **PGP encryption** and includes a built-in assistant for key management. With infrastructure based in Germany, it operates under strong European data protection standards, making it a practical choice for users who value both security and productivity.

<table>
  <thead>
    <tr>
      <th><strong>Advantages</strong></th>
      <th><strong>Disadvantages</strong></th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>Integrated office and collaboration tools</td>
      <td>Interface may feel less modern</td>
    </tr>
    <tr>
      <td>Supports PGP encryption with key assistant</td>
      <td>No free plan</td>
    </tr>
    <tr>
      <td>Ad-free</td>
      <td></td>
    </tr>
    <tr>
      <td>Suitable for teams and organisations</td>
      <td></td>
    </tr>
  </tbody>
</table>

### Infomaniak

[Infomaniak](https://www.infomaniak.com/en "Infomaniak Website") offers a secure email alongside a full suite of collaboration and cloud tools. It is well suited to businesses and individuals looking for an all-in-one solution. Emails are protected with **TLS encryption**, and the service includes spam filtering, custom domains, and integration with tools such as cloud storage and calendars. Infomaniak operates its own data centres in Switzerland, ensuring strong control over infrastructure and data handling.

<table>
  <thead>
    <tr>
      <th><strong>Advantages</strong></th>
      <th><strong>Disadvantages</strong></th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>Swiss hosting with strong data protection standards</td>
      <td>Smaller ecosystem than larger global providers</td>
    </tr>
    <tr>
      <td>Integrated collaboration tools</td>
      <td></td>
    </tr>
    <tr>
      <td>Custom domain support</td>
      <td></td>
    </tr>
    <tr>
      <td>Ad-free, no data monetisation</td>
      <td></td>
    </tr>
  </tbody>
</table>

### StartMail

[StartMail](https://www.startmail.com/ "StartMail Homepage") focuses on privacy and ease of use. Developed by the creators of Startpage, it offers **PGP encryption** in a user-friendly format, making secure email accessible to non-technical users. StartMail also allows users to create **disposable email addresses**, helping to reduce spam and protect personal data. The service is ad-free and does not track user activity. With servers in the Netherlands, it operates under European data protection standards.

<table>
  <thead>
    <tr>
      <th><strong>Advantages</strong></th>
      <th><strong>Disadvantages</strong></th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>Easy-to-use PGP encryption</td>
      <td>Limited advanced features</td>
    </tr>
    <tr>
      <td>Disposable email addresses</td>
      <td>Higher price point</td>
    </tr>
    <tr>
      <td>Strong privacy focus</td>
      <td></td>
    </tr>
    <tr>
      <td>Ad-free, no tracking</td>
      <td></td>
    </tr>
  </tbody>
</table>

## Conclusion

Choosing the best secure email provider depends on your specific needs. If you value **security, reliability, and business functionality**, IONOS and Zoho Mail offer strong all-in-one solutions. With features such as custom domains, administrative controls, and built-in protection against spam and malware, they are well suited for businesses and freelancers.

For those with higher privacy requirements, providers like ProtonMail and TutaMail are ideal. They offer end-to-end encryption and minimal data access but often come with **functional limitations** compared to more feature-rich business platforms.

Services such as Infomaniak, Mailbox.org, and StartMail provide a solid balance between **privacy, usability, and practical tools**, making them good options for individuals and small teams depending on the use case.


This is a markdown version of: [https://www.ionos.co.uk/digitalguide/e-mail/e-mail-security/secure-email-providers/](https://www.ionos.co.uk/digitalguide/e-mail/e-mail-security/secure-email-providers/) for AI/LLM consumption.