Mailbox.org vs Posteo
Both Mailbox.org and Posteo are European-built, GDPR-compliant solutions in the email hosting space. This comparison breaks down their features, pricing, compliance posture, and data residency so you can make an informed choice for your team.
Quick Overview
Mailbox.org
EU- Headquarters
- Berlin, DE
- Pricing
- From €3/mo
- Open Source
- No
Posteo
EU- Headquarters
- Berlin, DE
- Pricing
- From €1/mo
- Open Source
- No
Key Differences
- On pricing, Posteo is the more affordable option. Mailbox.org starts at €3/month while posteo starts at €1/month, though pricing alone shouldn't drive your decision — feature fit and compliance needs matter more.
- Posteo was founded in 2009, giving it a 5-year head start over Mailbox.org (founded 2014). More time in market often means a larger user community and more mature integrations, though newer entrants may offer more modern architectures.
- Each product has unique strengths: Mailbox.org offers Ad-free email hosting and PGP encryption support, while Posteo provides 100% renewable energy powered and PGP and S/MIME encryption. Your choice depends on which capabilities matter most for your workflow.
Feature Comparison
| Feature | Mailbox.org | Posteo |
|---|---|---|
| Name | Mailbox.org | Posteo |
| Pricing | From €3/mo | From €1/mo |
| Free Tier | ||
| GDPR | ||
| ISO 27001 | ||
| Open Source | ||
| Headquarters | Berlin, DE | Berlin, DE |
| Data Centers | DE | DE |
| Ad-free email hosting | ||
| PGP encryption support | ||
| Calendar and contacts (CalDAV/CardDAV) | ||
| Cloud storage with office tools | ||
| Custom domain support | ||
| Tracking pixel protection | ||
| IMAP/POP3/SMTP access | ||
| Catch-all addresses | ||
| 100% renewable energy powered | ||
| PGP and S/MIME encryption | ||
| Anonymous registration | ||
| Incoming mail encryption | ||
| Two-factor authentication | ||
| No ads or tracking | ||
| Cash payment option |
Pricing Comparison
Mailbox.org
From €3/mosubscription
Posteo
From €1/mosubscription
Compliance Comparison
Mailbox.org
GDPRDPA
Posteo
GDPRDPA
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How to Choose
You need enterprise-grade support and stability
Choose Mailbox.org
You prefer a nimble provider with personalised support
Choose Posteo
Mailbox.org vs Posteo — FAQ
What is the main difference between Mailbox.org and Posteo?
Both Mailbox.org and Posteo are European email hosting solutions with full GDPR compliance. The key differences lie in their approach: Mailbox.org is headquartered in Germany while Posteo is based in Germany. Mailbox.org is headquartered in Berlin, Germany, while Posteo is based in Berlin, Germany. Your choice should depend on your specific requirements for features, pricing, and data residency.
Which is more affordable, Mailbox.org or Posteo?
Mailbox.org starts at €3/month, while posteo starts at €1/month. Both use subscription pricing, so compare the tiers that match your team size and feature needs.
Are both Mailbox.org and Posteo GDPR compliant?
Yes. Both Mailbox.org and Posteo are European companies that store data within the EU/EEA and offer Data Processing Agreements. Neither is subject to the US CLOUD Act or FISA surveillance. For GDPR purposes, either option eliminates the legal risks associated with using US-based services.