Tuta Calendar

Name: Tuta Calendar
Author: Tuta Calendar

Encrypted calendar from Germany

GermanyEUEU hostedOpen sourceFree plan♻EU controlled

Visit website tuta.com

Tuta Calendar is an end to end encrypted calendar service from Germany. Appointments are encrypted so that the provider cannot read them, and the service is available as an app for iOS and Android or through the web app.

Tuta hosts in data centres around Germany and runs its servers and offices on green energy. As an open source European alternative to US calendar services, it suits people who already use encrypted email and want their appointments protected the same way.

Pricing

The free plan allows one calendar and up to 1 GB of storage. Larger plans such as Revolutionary at EUR 3 per month add calendar sharing, unlimited calendars and email.

External verification

EU verification badge

eu-alt.eu independently verified this service's European ownership. Choose a badge style and link it back to the dated evidence on this page.

Evidence last checked: 2026-09-04

Horizontal · Blue

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<a href="https://eu-alt.eu/en/product/tuta-calendar" rel="nofollow"><img src="https://eu-alt.eu/badges/tuta-calendar/ownership-blue.svg" alt="Tuta Calendar: EU ownership independently verified by eu-alt.eu" width="360" height="96" loading="lazy"></a>

Horizontal · Black

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<a href="https://eu-alt.eu/en/product/tuta-calendar" rel="nofollow"><img src="https://eu-alt.eu/badges/tuta-calendar/ownership-black.svg" alt="Tuta Calendar: EU ownership independently verified by eu-alt.eu" width="360" height="96" loading="lazy"></a>

Horizontal · White

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<a href="https://eu-alt.eu/en/product/tuta-calendar" rel="nofollow"><img src="https://eu-alt.eu/badges/tuta-calendar/ownership-white.svg" alt="Tuta Calendar: EU ownership independently verified by eu-alt.eu" width="360" height="96" loading="lazy"></a>

Compact · Blue

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<a href="https://eu-alt.eu/en/product/tuta-calendar" rel="nofollow"><img src="https://eu-alt.eu/badges/tuta-calendar/ownership-compact-blue.svg" alt="Tuta Calendar: EU ownership independently verified by eu-alt.eu" width="220" height="132" loading="lazy"></a>

Compact · Black

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<a href="https://eu-alt.eu/en/product/tuta-calendar" rel="nofollow"><img src="https://eu-alt.eu/badges/tuta-calendar/ownership-compact-black.svg" alt="Tuta Calendar: EU ownership independently verified by eu-alt.eu" width="220" height="132" loading="lazy"></a>

Compact · White

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Embed code

<a href="https://eu-alt.eu/en/product/tuta-calendar" rel="nofollow"><img src="https://eu-alt.eu/badges/tuta-calendar/ownership-compact-white.svg" alt="Tuta Calendar: EU ownership independently verified by eu-alt.eu" width="220" height="132" loading="lazy"></a>

Data and operations

Infrastructure and email path

Verified operational dependencies, shown separately from ownership and from the service's core data hosting.

Public website

Tuta

European provider

Observed: A 185.205.69.12 · AS210909
Evidence: Live website DNS ↗RIPE network record ↗

Incoming business email

Tuta

European provider

Observed: MX 0 mail.tutanota.de
Evidence: Current daily MX lookup ↗

Authorised outbound email

Tuta

European provider

Observed: SPF spf.tutanota.de
Evidence: Live SPF record ↗

Public DNS records identify visible providers and routes, not every backend location or private data-region setting.

Infrastructure checked: 2026-09-04

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