Parent company
Heinlein Support GmbH
Founder owned · headquartered in Germany · owns 1 VPN brand
A Berlin company providing mail infrastructure since 1992. Not venture funded, which shows in a product that behaves like a business mail host rather than a privacy app.
Brands it controls
Mailbox.org 58
A full German office suite for €1 a month, with PGP done properly.
Sources
- https://mailbox.org/en/about-us — ownership
Verification: needs primary source check, checked 2026-09-06.
Frequently asked
Which VPNs does Heinlein Support GmbH own?
Mailbox.org.
Is a VPN owned by Heinlein Support GmbH safe?
Ownership does not make a VPN unsafe, but it tells you whose incentives you are trusting. Heinlein Support GmbH is founder owned and headquartered in Germany. A Berlin company providing mail infrastructure since 1992. Not venture funded, which shows in a product that behaves like a business mail host rather than a privacy app. Each brand's review on this site scores the audit history and jurisdiction separately.
Does Heinlein Support GmbH own any VPN review sites?
Not that we have found. That is worth something: two of the largest VPN owners do.
How do you know this?
From the sources listed on this page — company filings, official brand pages and press releases. Verification status is needs primary source check, last checked 2026-09-06. If you know of a change, contact us.