Hostpoint E-Mail & Cloud Office vs Posteo

Compare Hostpoint E-Mail & Cloud Office and Posteo on capabilities, jurisdiction, assurance, and fit for European buyers.

Both listed as alternatives to: Gmail, Outlook.com

Hostpoint E-Mail & Cloud Office

Switzerland· Email Services

Needs review

Shortlist Hostpoint E-Mail & Cloud Office when you need Swiss-hosted custom-domain IMAP mail plus Open-Xchange calendars, Drive, and optional browser docs under Hostpoint AG—with Swiss human support and free mailbox migration. Skip when you require end-to-end zero-access mail (consider Proton Mail) or a full Microsoft 365 / Google Workspace admin stack; for another Swiss multi-product cloud suite, compare Infomaniak kMail.

Swiss-hosted mailCustom domain IMAPOpen-Xchange Cloud OfficeDrive + CalDAV/CardDAV7-day Swiss supportB2B DPA (GTC annex)

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Posteo

Germany· Email Services

Needs review

Shortlist when you want a paid German mailbox on self-operated servers, open protocols (IMAP/CalDAV), and extreme data minimisation (no inventory data, unlinked payments). Skip when you need custom domains, default E2EE without setup, multi-seat enterprise admin, or an Art. 28 DPA—consider Proton Mail, Tuta, mailbox.org, or Mailfence instead.

Self-operated DE serversData-minimising signupIMAP / CalDAV / CardDAVBSI TR-03108 (verified)Optional crypto mail storageAd-free, user-funded

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Highlighted rows differ between the two products.

Hostpoint E-Mail & Cloud Office vs Posteo: Snapshot
Feature	Hostpoint E-Mail & Cloud Office	Posteo
Country of origin	Switzerland	Germany
Category	Email Services	Email Services
Open source	No	Yes
Self-hosted	No	No
Headquarters	Switzerland	Germany
Legal entity	Hostpoint AG, Neue Jonastrasse 60, 8640 Rapperswil-Jona, Switzerland	Posteo e.K., Methfesselstr. 38, 10965 Berlin
Governing law	Not listed	German / EU law (GDPR, BDSG, telecom secrecy / TTDSG as applicable)
US parent / control	No known US parent	No known US parent
CLOUD Act exposure (indicative)	Low	Low
Hosting / residency	Primary: Hostpoint-operated servers and NetApp storage at Digital Realty (ex-Interxion) Glattbrugg, CH; Swiss e-mail/Drive residency claimed, dual backups, hourly snapshots. swiss hosting label (rankingCoach exception). Migration: Audriga (DE). Full public Sub-Processor List not found—DPA references list. Site analytics: Google Analytics, reCAPTCHA, Hotjar (not mailbox storage).	Self-operated infrastructure; stored mail and backups in Germany (Frankfurt, Bielefeld, Berlin DCs per privacy materials). No AWS/GCP/Azure listed for mailbox hosting. Payment top-ups may use PayPal/card networks (unlinked from accounts per Posteo).
Summary	Swiss custom-domain email and Open-Xchange Cloud Office (calendar, Drive, docs) from Hostpoint AG, with mailboxes and data hosted in Switzerland.	Independent Berlin email provider with self-operated German servers, data-minimising signup, open-standard clients, and layered optional encryption—not a free-tier ad network.
Tags	email swiss-hosting cloud-office open-xchange custom-domain sme imap groupware productivity fadp	email privacy open-source gdpr encryption green-energy germany

At a glance: Hostpoint E-Mail & Cloud Office vs Posteo
At a glance	Hostpoint E-Mail & Cloud Office	Posteo
HQ	Rapperswil-Jona, Switzerland	Berlin, Germany
Legal entity	Hostpoint AG (CHE-101.974.997)	Posteo e.K. (HRA 47592 B)
Product	Custom-domain email + Cloud Office (Open-Xchange)	Not listed
Hosting	Hostpoint servers, Digital Realty Glattbrugg (CH)	Self-operated servers in Germany
Self-host / OSS	Neither (managed SaaS)	Not listed
Commercial model	Paid per-mailbox tiers; domain required; no free tier	Prepaid paid service; no free tier
Protocols	Not listed	IMAP, POP3, SMTP, CalDAV, CardDAV
Self-host	Not listed	No (hosted service)
Founded	Not listed	2009
Energy	Not listed	100% green energy (Green Planet Energy, claimed)

Key capabilities: Hostpoint E-Mail & Cloud Office vs Posteo
Key capabilities	Hostpoint E-Mail & Cloud Office	Posteo
Swiss-hosted mail	Yes	Not listed
Custom domain IMAP	Yes	Not listed
Open-Xchange Cloud Office	Yes	Not listed
Drive + CalDAV/CardDAV	Yes	Not listed
7-day Swiss support	Yes	Not listed
B2B DPA (GTC annex)	Yes	Not listed
Self-operated DE servers	Not listed	Yes
Data-minimising signup	Not listed	Yes
IMAP / CalDAV / CardDAV	Not listed	Yes
BSI TR-03108 (verified)	Not listed	Yes
Optional crypto mail storage	Not listed	Yes
Ad-free, user-funded	Not listed	Yes

Hostpoint E-Mail & Cloud Office

Custom-domain mailboxes with IMAP and free migration
Each plan is one inbox on a domain you control (new or external), with webmail plus IMAP/POP3/SMTP, unlimited forwards, aliases, out-of-office replies, server-side search, and spam/virus filters. Hostpoint’s free migration path (including Audriga-assisted moves from Gmail, GMX, Bluewin, Yahoo, and other hosts) is designed so teams keep historical mail when leaving FreeMail. Requires a domain; not a freemail brand address.
Open-Xchange Cloud Office: calendar, contacts, tasks
Browser suite for multi-calendar scheduling, shared address books, tasks, and appointment booking with free/busy style team scheduling. CalDAV/CardDAV sync targets Outlook, Thunderbird, Apple Calendar, and similar clients. Fits SMEs that want groupware next to IMAP without a full Microsoft 365 tenant.
Hostpoint Drive with desktop and mobile clients
Swiss-hosted file storage included per tier (upgradeable within product limits), with share links, e-mail shares, access controls, and local clients for Windows, macOS, iOS, and Android (Open-Xchange-powered). Business tier adds managing shared folders in teams. This is conventional cloud storage under Hostpoint—not zero-knowledge Drive.
Browser documents and real-time collaboration (Plus/Business)
From Cloud Office Plus upward, edit text, spreadsheets, and presentations in the browser with Microsoft Office file compatibility, real-time multi-user editing, and version history. Basic is mail-plus-calendar oriented; teams that live in shared docs should shortlist Plus or Business rather than Basic.
Swiss ops: dual backups, monitoring, seven-day support
Product pages claim Swiss data location, 24/7 monitoring, DDoS protection, hourly snapshots, daily mail backups with tiered retention (longer on higher tiers), and backup copies in two locations. Support is Swiss-based Mon–Sun daytime via phone, e-mail, WhatsApp, and form—useful for SMEs that need humans, not only tickets.

Posteo

Signup without identity data; payments unlinked
Accounts can be created without name, address, or phone. Posteo's payment system (bank transfer codes, cash, card, PayPal) is designed so payment identifiers are not stored against the mailbox. Practical limit: recovery options you add yourself and how you fund the prepaid balance still affect anonymity in the real world.
Optional crypto mail storage for the whole mailbox
One setting encrypts stored messages—including metadata—with a key protected by the account password (RSA/AES/HMAC/bcrypt design; Dovecot plugin). Posteo states it cannot disable crypto storage once enabled and cites a Cure53 review. Limit: this is server-side encryption at rest after delivery, not sender-to-recipient E2EE, and losing the password can mean losing access to encrypted data.
TLS, DANE, and BSI-certified secure transport
Access is TLS-only with PFS, HSTS, and DANE/TLSA. Optional TLS-sending/receiving guarantees refuse delivery over cleartext peer links. Posteo holds BSI TR-03108 v2 Secure Email Transport certification (BSI-K-TR-0745-2025). Transport quality still depends on the remote provider's stack.
CalDAV/CardDAV with optional password encryption
Calendars and contacts sync via open standards and can be AES-encrypted in Posteo's database so the provider cannot read them when the feature is on. Trade-off: encrypted calendars cannot be shared the same way, and password reset without the old secret can lock you out of encrypted PIM data.
In-house migration without third-party movers
Posteo's own migration tool pulls mail (and often contacts/calendars) over encrypted links from previous providers without routing through a third-party migration SaaS. Quota: a limited number of migrations per account, with an optional collector for ongoing fetch from the old box.

Assurance & compliance: Hostpoint E-Mail & Cloud Office vs Posteo
Assurance & compliance	Hostpoint E-Mail & Cloud Office	Posteo
Independent security / no-logs audit	Not found No public third-party no-logs or product security audit PDF for Cloud Office located on official pages.	Partial BfDI on-site privacy inspection (2016) confirmed data-minimisation / no inventory IP model (public PDF). Crypto mail storage: vendor cites Cure53 multi-level audit; full public report not located. Not a continuous independent no-logs certification programme.
ISO 27001	Not found Company page describes the Glattbrugg data center as ISO- and FINMA-certified (facility). No Hostpoint-organization ISO 27001 certificate page found in this pass.	Not found No ISO 27001 claim found on primary Posteo security/privacy pages.
SOC 2 / SOC 3	Not found No public SOC 2/3 report for Hostpoint Cloud Office found.	Not found No SOC 2/3 report advertised on primary pages.
GDPR / EU data protection	Vendor claimed Swiss FADP primary; privacy states GDPR may apply in some processing. EU representative: Hostpoint Limited, Malta. Swiss–EU adequacy eases transfers. Customer remains controller for hosted content.	Vendor claimed German entity; privacy policy cites GDPR/BDSG/telecom secrecy; DPO published; BfDI inspection history.
US CLOUD Act exposure (indicative)	Partial EuropeanStack assessment: Swiss AG, no known US parent, Swiss product residency claims → relatively low ownership exposure vs US SaaS mail. Residual factors: US-listed Digital Realty facility owner (colocation), possible US-group tools on full subprocessor/marketing stack, privacy exceptional-transfer language. Not a clean bill; not legal advice.	Partial EuropeanStack assessment: German e.K., no known US parent, self-operated DE hosting with no public US-cloud mailbox subprocessors → indicative exposure low. Status is partial (not a clean bill): payment rails and lawful German disclosure remain. Not legal advice.
Data processing agreement (B2B)	Vendor claimed Annex 2 DPA + TOMs published with web-hosting GTC PDF; sub-processor engagement rules and audit rights described. Confirm applicability to your E-Mail & Cloud Office order and obtain current Sub-Processor List.	Not found Vendor states it is not an Art. 28 processor as a public electronic communications service and does not offer customer DPAs.
EU AI Act	Not applicable Not an AI product.	Not applicable Conventional email/PIM service; not an AI product.
swiss hosting label	Vendor claimed Company states Hostpoint bears the swiss hosting label (HQ + data location in Switzerland), with rankingCoach exceptions noted.	Not listed
BSI TR-03108 Secure Email Transport	Not listed	Verified BSI certificate BSI-K-TR-0745-2025 (OpenSource Security GmbH audit; valid through 2030 per BSI listing).

Considerations & known limitations: Hostpoint E-Mail & Cloud Office vs Posteo
Considerations & known limitations	Hostpoint E-Mail & Cloud Office	Posteo
Not zero-access / E2E mail	Medium Standard hosted mail: provider can access mailbox content for operations, spam filtering, and legal process. Unsuitable if your threat model requires only client-held keys.	Not listed
Full subprocessor inventory not self-serve	Medium DPA references a Sub-Processor List and change notifications, but a complete public e-mail-path inventory was not found on the marketing site. Request it (and any US-group vendors) before procurement sign-off.	Not listed
Facility ISO/FINMA vs org certification	Low ISO/FINMA language on public pages refers to the data center facility. Do not treat that as a verified Hostpoint ISMS ISO 27001 without a certificate.	Not listed
Docs collaboration only on higher tiers	Low Browser Office documents and real-time collab start at Plus; team shared-folder management is Business-oriented. Basic is intentionally limited.	Not listed
Customer still owns backup duty	Low GTC state customers remain responsible for their own backups; Hostpoint packages are supplementary and do not guarantee zero data loss.	Not listed
No custom domains	Not listed	High Posteo will not host your own domain. Organisations needing brand continuity or provider portability via DNS must pick another host or self-host.
Encryption is layered, not default E2EE	Not listed	Medium Without crypto mail storage, inbound encryption, or client-side PGP/S/MIME, Posteo can process mailbox content like a normal provider. Lawful intercept (TKU) and seizures remain possible under German process; transparency reports show content releases do occur under court order.
No customer Art. 28 DPA	Not listed	Medium Procurement checklists that require a signed processor agreement will stall. Posteo argues telecom special law applies instead; validate with legal counsel for your use case.
Password loss risk with crypto features	Not listed	Medium Crypto mail storage and encrypted calendars/contacts depend on the account password; Posteo cannot recover plaintext if that secret is lost after encryption is enabled.
Payment processors outside pure DE mail path	Not listed	Low Optional PayPal/card top-ups involve non-German commercial processors even though Posteo says it does not link payment identity to the mailbox. Cash/bank-code paths reduce that linkage further.

Fit

Hostpoint E-Mail & Cloud Office

Best fit when

Swiss SMEs and freelancers replacing FreeMail with branded @domain mailboxes
Teams that want IMAP mail plus shared calendars, contacts, and Drive in one Swiss panel
Buyers already using Hostpoint domains/hosting who want same-vendor mail and support
Organizations that prioritize Swiss data location messaging and Swiss daytime phone support
Migrators from Gmail/GMX/Bluewin who need an included mailbox migration path

Poor fit when

Security programs that require zero-access / E2E encrypted mail by default
Enterprises needing SSO/SCIM-centric identity and deep SaaS compliance tooling out of the box
Teams that only want free freemail without a domain or paid plan
Self-host or fully open-source groupware mandates
Buyers who need a published independent security audit report before shortlisting

Consider instead when

When: You need end-to-end encrypted, zero-access mail as the primary control
Consider: Proton Mail or Tuta
Hostpoint is conventional hosted Open-Xchange mail, not a zero-knowledge mailbox.
When: You want a broader Swiss cloud suite (kDrive, Swiss Meet, etc.) under one multi-product vendor
Consider: Infomaniak kMail
Compare suite breadth vs Hostpoint’s registrar/hosting + Cloud Office focus.
When: You need Microsoft/Google admin ecosystems, global collaboration defaults, or advanced DLP
Consider: Microsoft 365 or Google Workspace
Trade Swiss-operator simplicity for global SaaS depth and US-group jurisdiction.
When: You want German privacy-oriented hosted mail with OpenPGP-centric workflows
Consider: mailbox.org or Mailfence
Different legal HQ and crypto posture; Hostpoint is Swiss SME groupware-first.

Posteo

Best fit when

Individuals and small teams who want German jurisdiction and open-standard clients without Google or Microsoft mail
Users prioritising anonymous or low-identity signup and prepaid funding without linking payments to the mailbox
Organisations that accept posteo.* addresses and value no ads, no tracking, and published transparency reports
Operators who want optional full-mailbox encryption at rest (crypto mail storage) plus PGP/S/MIME tooling
Buyers who need BSI-aligned secure email transport certification rather than US SOC 2 paperwork

Poor fit when

Anyone requiring custom domains or branded organisational addresses
Teams that need default zero-access E2EE for every message without enabling optional layers
Procurement processes that mandate a signed Art. 28 DPA, SOC 2, or ISO 27001 from the vendor
Large enterprises needing multi-seat admin, shared domain policies, or deep Microsoft/Google workspace integration

Consider instead when

When: You need default end-to-end encryption and a broader encrypted suite
Consider: Proton Mail or Tuta
Posteo is IMAP-first with optional crypto layers; Proton/Tuta lead with zero-access defaults.
When: You need custom domains or richer business mail hosting
Consider: mailbox.org or Mailfence
Posteo deliberately refuses own domains to avoid inventory-data obligations.
When: You need free-tier consumer mail tightly integrated with docs and chat
Consider: Gmail or Outlook.com
Trade privacy posture and EU self-operation for ecosystem convenience.

Open questions for due diligence

Hostpoint E-Mail & Cloud Office

What is the current Sub-Processor List for E-Mail & Cloud Office (including spam/AV engines, backup tooling, Audriga, any CDN)?
Does your contract package explicitly attach the web-hosting DPA annex to standalone Cloud Office mailboxes?
Any US-group processors in the live list that would change a CLOUD Act or transfer assessment?
Is there a customer-facing ISO/SOC report for Hostpoint operations beyond data-center facility claims?
Data residency guarantees in writing for dual backup locations (both fully in Switzerland)?

Posteo

Does your counsel accept Posteo's position that no Art. 28 DPA is required for occupational use?
Will posteo.de / .net / .com addresses meet your brand, deliverability, and anti-spoofing requirements without custom domains?
Which encryption layers (crypto mail storage, inbound PGP/S/MIME, client E2EE) will your users actually enable and support?
Do you need ISO 27001/SOC 2 artefacts that Posteo does not publish?
Is BSI TR-03108 transport certification sufficient for your sector's secure-email checklist?