Mailfence vs Posteo Comparison

Feature	Mailfence Visit →	Posteo Visit →
Overview
Rating	7.0	6.1
Pricing	$0.00/moFree $2.50/moBase (individual, annual) $3.50/moEntry (individual, annual) Show billing detailsHide billing details Free: $0 Base (individual, annual): $2.50/mo billed yearly Entry (individual, annual): $3.50/mo billed yearly	$1.00/moStandard (individual, monthly) Show billing detailsHide billing details Standard (individual, monthly): EUR 1/month, prepaid credit, no annual commitment
Free tier	Limited free tier Show detailsHide details 1 GB total (500 MB email + 500 MB documents), no custom domain, Knowledge Base-only support.	Paid only
Established	1999	2009
Platforms	AndroidiOS	Not specified
Privacy
Jurisdiction	Belgium Show detailsHide details ContactOffice Group sa, Avenue Franklin Roosevelt 47b, B-1050 Brussels, Belgium, company number BE 0466.241.584. Gag orders are not legally possible in Belgium — Mailfence's warrant canary states it has never received a US National Security Letter or FISA court order, and could disclose a valid Belgian court order to the affected user.	Germany Show detailsHide details Posteo e.K. (a registered sole proprietorship), Methfesselstr. 38, 10965 Berlin. Registered at the Handelsregister Berlin-Charlottenburg, HRA 47592 B. Founded and owned by Patrik and Sabrina Löhr, self-financed with no external investors or debt.
Independent security audit	None on record	Cure53 2017 Show audit detailsHide audit details Posteo web application, including Calendar and Notes (a separate, earlier Cure53 test in April 2015 covered Crypto Mail Storage specifically)
Source code	Closed source	Partly open source
Zero-access encryption	No	Yes
Intra-provider E2EE	No	No
External PGP	Native	Native
Past data breach	No	No
Telemetry	On unless you opt out	No telemetry
Features
Hosting	Cloud	Cloud
Custom domain support	Yes	No
Aliases	Unlimited	Limited
Anti-spam approach	Incoming and outgoing messages are automatically analysed by anti-spam, anti-virus and anti-abuse checking routines; the provider's own security-analysis documentation states this applies at the transport layer and that OpenPGP-encrypted message bodies are never visible to the server.	Described by Posteo only as a 'highly efficient spam and virus filter' — no further technical methodology is publicly documented.
Bundled services	CalendarsDocumentsGroups	CalendarAddress BookNotes