Email providers · Video conferencing software

mailbox

Name: mailbox
Author: mailbox

German email provider on carbon neutral servers

GermanyEUEU hosted♻EU controlled

Visit website mailbox.org

mailbox is a German email provider with webmail, a calendar over CalDAV and contacts over CardDAV. It also includes a video call feature, so small teams can meet without a separate tool. The larger plans let you use your own domain and give you more storage.

mailbox is operated by Heinlein Hosting GmbH, a wholly owned subsidiary of Heinlein Support GmbH. The wider Heinlein Group has four brands and more than 150 employees. The service runs on dedicated servers in two separate locations in Germany, and the Berlin data centres and offices use electricity from renewable sources.

Pricing

Three plans are available: Light at 1 euro per month, Standard at 3 euro per month and Premium at 9 euro per month, with more features and storage as you move up.

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

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

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

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

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

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

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<a href="https://eu-alt.eu/en/product/mailbox-org" rel="nofollow"><img src="https://eu-alt.eu/badges/mailbox-org/ownership-compact-white.svg" alt="mailbox: 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

Heinlein Group

European provider

Observed: A 185.97.174.35 · AS199118
Evidence: Live website DNS ↗RIPE network record ↗

Incoming business email

mailbox.org

European provider

Observed: MX 10 mx1.mailbox.org · 10 mx2.mailbox.org · 10 mx3.mailbox.org · 10 mx4.mailbox.org · 50 mx-n.mailbox.org
Evidence: Current daily MX lookup ↗

Authorised outbound email

Direct or undisclosed mail senders

Provider control not verified

Observed: SPF v=spf1 ip4:213.203.238.0/25 ip4:195.10.208.0/24 ip4:91.198.250.0/24 ip4:80.241.56.0/21 ip6:2001:67c:2050::/48 mx ~all
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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