Top marks for privacy
In Stiftung Warentest’s assessment, mailbox performed particularly well in the privacy category, which accounts for 30 per cent of the overall score. Here, mailbox achieved the top mark of 1.4, earning a ‘very good’ rating for the app’s data transmission behaviour, basic protection of user data and end-to-end encryption options such as PGP and S/MIME. This category also includes the security of general email traffic, which mailbox has already demonstrated for the BSI IT Security Mark and the BSI Gold Status for email security. Furthermore, mailbox is ISO 27001- and BSI C5-certified – both external audits confirm high information security standards.
mailbox impresses in terms of set-up and use
With a test score of 0.8, mailbox stands out from all other providers tested in the ‘Set-up’ category and achieves an excellent result here too. With the Light plan tested, mailbox offers a cost-effective entry point into secure and reliable email communication.
mailbox impresses in the ‘Usage’ category with the top mark of 1.9. This category carries the greatest weighting at 45 per cent. The assessment covered features, usage via the webmail client and the app, as well as ad-free experience were tested. mailbox stands out thanks to its support for open standards such as IMAP, POP3 and SMTP, as well as the option to use email alias addresses. In the Standard and Premium plans, your own domains can also be used.
Digital sovereignty starts with your email provider
In its email provider test, Stiftung Warentest highlights the legal risk factors associated with US companies. Whether the US CLOUD Act, a ‘kill switch’ or account suspensions due to politically motivated sanctions: Stiftung Warentest advises caution when using US-based providers. In the test, however, mailbox scored highly as a GDPR-compliant German provider with data centres located exclusively in Germany. The top mark of 1.4 in the privacy category shows that mailbox is the right answer to the current challenges in digital policy.
