eclipso Mail Europe vs Runbox

Compare eclipso Mail Europe and Runbox on capabilities, jurisdiction, assurance, and fit for European buyers.

Both listed as alternatives to: Gmail, Outlook.com

eclipso Mail Europe

Germany· Email Services

Needs review

Shortlist when you want German-hosted mail with direct IMAP/SMTP, optional OpenPGP/S/MIME free on all tiers, prepaid freemium cost control, and a small business suite (drive, calendar, hybrid SMS/fax/post). Skip when you need zero-access defaults, published ISO/SOC audits, or large-enterprise identity—consider Posteo, Tuta, Proton Mail, or mailbox.org instead.

Germany-hosted (claimed)OpenPGP + S/MIMEIMAP/SMTP nativePrepaid freemiumOwner-operated DEBusiness DPA (Art. 28)

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Runbox

Norway· Email Services

Needs review

Shortlist Runbox when you need Norwegian/EEA-hosted IMAP email with custom domains, ad-free subscription economics, and standard clients. Skip when you require default zero-access E2EE—consider Proton Mail or Tuta instead—or when you need a full Microsoft 365-style suite.

Norwegian email hostingIMAP / POP / SMTPCustom domains100% renewable (claimed)Runbox 7 open sourceOptional PGP / S/MIME

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Highlighted rows differ between the two products.

eclipso Mail Europe vs Runbox: Snapshot
Feature	eclipso Mail Europe	Runbox
Country of origin	Germany	Norway
Category	Email Services	Email Services
Open source	No	Yes
Self-hosted	No	No
Headquarters	Germany	Norway
Legal entity	Claus-Peter Beringer (eclipso Mail Europe), Grubstr. 9b, 95445 Bayreuth	Runbox Solutions AS
Governing law	German / EU law (GDPR, BDSG); BayLDA supervisory authority named in privacy notice	Norwegian law; Personal Data Act implementing GDPR (EEA)
US parent / control	No known US parent	No known US parent
CLOUD Act exposure (indicative)	Medium	Medium
Hosting / residency	Primary hosting claimed exclusively in Germany; privacy policy names Speedloc Datacenter (Görlitz) with AVV. Optional SMS/fax/post: Commify Germany, CM.com Germany, letterei.de (all DE). Payments: Stripe Payments Europe and PayPal (Europe). Site: Google reCAPTCHA; marketing ad partners documented; Matomo self-hosted analytics.	Core email and account content: servers in Oslo (StackInfra) under Norwegian jurisdiction; systems management Copyleft Solutions AS (Norway). Optional third parties per privacy policy: Stripe, PayPal, Coinbase (US payments); Enom (US domains); Gandi (FR); Domeneshop (NO); JaguarPC (US default web hosting, Norway option); NodePing (US, status page). No known US parent.
Summary	Owner-operated German email and cloud suite with IMAP, optional OpenPGP/S/MIME, prepaid freemium, Drive/organizer, and hybrid SMS/fax/post—hosted in Germany.	Norwegian subscription email hosting from Runbox Solutions AS: Oslo-hosted IMAP mailboxes, custom domains, CalDAV/CardDAV, and optional PGP. Ad-free; not default zero-access.
Tags	privacy gdpr email germany openpgp prepaid cloud-storage imap	privacy gdpr email-hosting norway renewable-energy open-source-webmail

At a glance: eclipso Mail Europe vs Runbox
At a glance	eclipso Mail Europe	Runbox
HQ	Bayreuth, Germany	Oslo, Norway
Legal entity	Claus-Peter Beringer (owner-operated)	Runbox Solutions AS (orgnr 996877027)
Founded	2003 (vendor)	Service since 2000; current AS form 2011
Hosting	Germany; Speedloc Datacenter (Görlitz) named in privacy policy	Email: StackInfra Oslo; optional web hosting may default US
Open source	No	Partial (Runbox 7 web app); not self-hosted
Self-hosted	No (SaaS)	Not listed
Commercial model	Freemail (ad-supported) + prepaid paid tiers	Paid subscription + trial (no permanent free tier)
Encryption	Optional OpenPGP + S/MIME; TLS in transit	Not listed

Key capabilities: eclipso Mail Europe vs Runbox
Key capabilities	eclipso Mail Europe	Runbox
Germany-hosted (claimed)	Yes	Not listed
OpenPGP + S/MIME	Yes	Not listed
IMAP/SMTP native	Yes	Not listed
Prepaid freemium	Yes	Not listed
Owner-operated DE	Yes	Not listed
Business DPA (Art. 28)	Yes	Not listed
Norwegian email hosting	Not listed	Yes
IMAP / POP / SMTP	Not listed	Yes
Custom domains	Not listed	Yes
100% renewable (claimed)	Not listed	Yes
Runbox 7 open source	Not listed	Yes
Optional PGP / S/MIME	Not listed	Yes

eclipso Mail Europe

Native OpenPGP and S/MIME in every plan
OpenPGP (RFC 4880/9580) key wizard and import work in webmail and apps, free from Freemail upward; S/MIME accepts user-supplied X.509 certificates for business clients. E2EE only applies when both sides use it—plain IMAP mail is not zero-access by default. Private keys for webmail PGP are held in the account under a passphrase for multi-device use.
Standard IMAP, POP3, SMTP plus CalDAV/CardDAV
Direct protocol access for Thunderbird, Outlook, Apple Mail, and mobile clients without a bridge product. Calendar and contacts sync via CalDAV/CardDAV; Premium and Business add WebDAV for the cloud drive. Suits teams that refuse locked-in web-only mail.
German-hosted suite: mail, drive, organizer
One account covers webmail, eclipso Drive file storage with link sharing, Media Center, calendar, address book, notes, and tasks. Vendor claims exclusive Germany data centres (privacy policy names Speedloc Datacenter, Görlitz). Storage and address limits scale by prepaid tariff; WebDAV and higher quotas need paid tiers.
Prepaid freemium with optional hybrid channels
Freemail signs up without credit card or phone number and is ad-supported; paid Connect/Premium/Business terms are prepaid and end automatically after a reminder. Credits enable SMS, fax, and hybrid physical post through named German gateways—useful for crafts and SMEs still on those channels.
Business domain and Art. 28 DPA on Business plan
Business includes a custom mail domain option, higher alias counts, daily send limits suitable for small campaigns, and an in-product Art. 28 GDPR DPA download per vendor docs. Not a full enterprise workspace: no public SCIM/SSO pack or multi-org admin model documented.

Runbox

Norwegian-hosted IMAP email with full-disk encryption
Mailboxes live on servers Runbox places in a StackInfra facility in Oslo under Norwegian jurisdiction, with full-disk encryption at rest and TLS (including PFS) in transit. Access via IMAP, POP, SMTP, or Runbox 7 webmail suits teams that need standard clients rather than a proprietary-only app.
Custom domains, aliases, and multi-account admin
Host mail on your own domain, manage sub-accounts from a main account, and use many aliases on Runbox domains plus unlimited aliases on customer domains. Plus-addressing and filters help separate identities without running separate mailboxes.
CalDAV/CardDAV plus optional PGP or S/MIME
Integrated calendar and contacts sync over CalDAV and CardDAV with common desktop and mobile apps. End-to-end confidentiality is user-controlled via PGP or S/MIME—not zero-access by default—so operators can still index mail for search and scan for malware.
Ad-free, subscription-funded privacy model
Runbox states it does not show ads, does not use third-party trackers such as Google Analytics, and only scans messages for spam/virus protection—not advertising. Revenue is subscription-based with a public trial period, aligning incentives away from data-mining free mail.
Runbox 7 open-source webmail on hydropowered infra
The Runbox 7 web client is published on GitHub for inspection; the hosted server stack remains largely proprietary. Email infrastructure is advertised as 100% certified renewable electricity in Norway, with additional company offset claims—useful for sustainability procurement checklists.

Assurance & compliance: eclipso Mail Europe vs Runbox
Assurance & compliance	eclipso Mail Europe	Runbox
Independent security / no-logs audit	Not found No public third-party security or no-logs audit PDF located on official pages	Not found Vendor claims minimal logging and short retention windows; no public independent audit report found
ISO 27001	Not found No ISO 27001 claim found on official security/about pages at research time	Not found No Runbox ISO 27001 certificate found on primary pages (power supplier ISO 14001 is environmental, not info-sec)
SOC 2 / SOC 3	Not found No SOC 2/3 report referenced on official site	Not found No public SOC 2/3 report located
GDPR / EU data protection	Vendor claimed German controller, DPO contact, BayLDA authority, GDPR rights language in privacy policy; servers claimed in Germany	Vendor claimed Norwegian entity; Personal Data Act implements GDPR; appointed DPO; privacy policy documents rights and retention
US CLOUD Act exposure (indicative)	Partial EU/DE owner-operated entity with DE hosting (Speedloc), but Stripe, PayPal, and Google reCAPTCHA/ad tooling introduce US-group processing paths for payment and website data. Not legal advice.	Partial No known US parent; core email in Norway. Medium/partial because privacy policy lists US third parties (Stripe, PayPal, Coinbase, Enom, JaguarPC web hosting default, NodePing). Not legal advice.
Data processing agreement (B2B)	Vendor claimed Art. 28 DPA described as included and downloadable on Business plan; confirm for lower tiers	Not found Processor DPA with Copyleft is mentioned; no public customer-facing B2B DPA template found—ask sales/support
EU AI Act	Not applicable Email/cloud suite; not an AI system product	Not applicable Email hosting product; vendor states no intrusive AI for ad profiling

Considerations & known limitations: eclipso Mail Europe vs Runbox
Considerations & known limitations	eclipso Mail Europe	Runbox
Not zero-access by default	Medium Without OpenPGP/S/MIME, mailbox content is accessible to the operator like traditional IMAP hosts. Webmail PGP private keys are stored in-account under a passphrase—review threat model vs pure local keys.	Medium Unlike Proton/Tuta, Runbox can access stored mail for spam/virus scanning, indexing, and lawful process. Use PGP/S/MIME when E2EE is required.
US-group payment and site tooling	Medium Stripe, PayPal, Google reCAPTCHA, and documented ad partners process personal data outside pure DE mailbox hosting. Material for CLOUD Act and transfer diligence even if mail servers stay in Germany.	Not listed
No public ISO/SOC or independent audit	Medium Security assurance is first-party documentation only. Regulated buyers will need questionnaires, AVVs, and possibly on-request evidence.	Not listed
Freemail is ad-supported	Low Free tier includes advertising as a service component. Paid tiers are marketed as ad-free; verify current footer/banner behaviour on the live product.	Not listed
Owner-operated scale limits	Low Independent DE operator (not VC-backed hyperscale). Expect SME-grade support hours and product depth rather than global enterprise SLAs.	Not listed
US vendors on optional product paths	Not listed	Medium Payments (Stripe/PayPal/Coinbase), domain registrar Enom, and default JaguarPC web hosting introduce US processors. Keep web hosting in Norway and minimize US payment data if policy requires.
No public ISO 27001 / SOC 2 / independent audit	Not listed	Medium Assurance relies on vendor policy, Norwegian law, and facility claims. Regulated buyers may need NDA evidence or on-site questionnaire.
Partial open source only	Not listed	Low Runbox 7 webmail is open source; mail backend is proprietary SaaS—no self-host path.
Post-closure and backup retention	Not listed	Low Privacy policy defines multi-month content retention and backup windows after closure (and longer account-info retention for bookkeeping). Request immediate deletion if policy requires faster wipe.

Fit

eclipso Mail Europe

Best fit when

Individuals and freelancers who want German mail with Thunderbird/Outlook IMAP and optional OpenPGP without a bridge
SMEs needing a custom domain, German server claims, and an Art. 28 DPA on the Business plan
Buyers who prefer prepaid terms that end automatically over auto-renewing Big Tech suites
Users who still send SMS, fax, or hybrid physical post from the same account
Teams migrating from Gmail/Outlook that value CalDAV/CardDAV and a bundled drive/organizer

Poor fit when

Orgs that require zero-access architecture where the provider never stores decryptable mailbox keys by default
Enterprises needing public ISO 27001/SOC 2 reports, SCIM/SSO, or multi-tenant admin
Buyers who refuse any US-group payment or website tooling (Stripe, PayPal, Google reCAPTCHA/ads)
Users seeking open-source or self-hosted mail only

Consider instead when

When: You want a simple paid-only German privacy mailbox without freemium advertising
Consider: Posteo
Posteo is ad-free paid; eclipso differentiates with freemail and hybrid channels
When: You prioritise always-on encryption over standard IMAP clients
Consider: Tuta or Proton Mail
Tuta uses proprietary E2EE clients; Proton needs Bridge for full IMAP-style access
When: You need a broader paid German workplace suite with stronger enterprise packaging
Consider: mailbox (formerly mailbox.org)
Compare admin, audit, and collaboration depth on current vendor docs
When: You need Google/Microsoft collaboration depth more than EU operator control
Consider: Gmail or Microsoft 365
Different jurisdiction and data-use models

Runbox

Best fit when

Teams that want Oslo-hosted mailboxes under Runbox Solutions AS and Norwegian law, with full IMAP client freedom
Organizations needing custom domains, multi-account admin, and generous alias patterns without self-hosting an MTA
Buyers who prioritize subscription-funded, ad-free email over free ad-supported Gmail/Outlook tiers
Procurement that values renewable-energy data-center claims and Ethical Consumer Best Buy style ESG signals
Users comfortable managing optional PGP/S/MIME when message-level E2EE is needed for specific threads

Poor fit when

Requirements for default zero-access encryption where the provider cannot read mailbox content (prefer Proton Mail or Tuta)
Need for a fully self-hosted or fully open-source mail server stack
Heavy dependence on Microsoft 365 collaboration (Teams, SharePoint, advanced Exchange) rather than plain email hosting
Mandatory public ISO 27001 or SOC 2 evidence before shortlist—none found on public Runbox pages in this research pass
Optional product paths (default US web hosting via JaguarPC) when a strict no-US-vendor rule covers every SKU

Consider instead when

When: You need default end-to-end / zero-access encryption for all messages
Consider: Proton Mail or Tuta
Runbox uses optional PGP/S/MIME; operator can access stored mail for filtering and lawful process
When: You want a German privacy-oriented host with similar sustainability positioning
Consider: Posteo
Compare jurisdiction (DE vs NO), domain limits, and feature depth
When: You need Belgian email with integrated collaboration extras
Consider: Mailfence
Different encryption defaults and product scope
When: You need global free-tier convenience and suite lock-in
Consider: Gmail or Outlook.com / Microsoft 365
Accept US jurisdiction and ad/suite economics tradeoffs

Open questions for due diligence

eclipso Mail Europe

Can non-Business tariffs obtain a signed Art. 28 DPA and full subprocessor list on request?
Is Speedloc the sole host for mailbox content (not only the marketing site), and are backup/DR locations exclusively in Germany?
Are independent penetration tests or ISO plans available under NDA for enterprise buyers?
What exact data minimisation applies to freemail advertising versus paid ad-free tiers (inbox content vs account metadata)?
How are OpenPGP private keys encrypted at rest in the account store, and is export/deletion documented for offboarding?

Runbox

Will Runbox sign a customer-facing B2B DPA listing all subprocessors for your tenant configuration?
Can optional web hosting and domain registration be restricted to EEA-only providers for your account?
Is any independent penetration test or SOC/ISO report available under NDA?
What is the current employee ownership share and any non-EU shareholding since the 2018 figure on the About page?
Confirm backup geography (privacy policy: secure servers separate from main system—are they also Norway-only?)