Contracting operator
- Postscale
- DNScale OÜ, an Estonian company.
- Mailtrap
- Railsware Products Studio LLC, a US company registered in Delaware.
A Mailtrap alternative built for EU data sovereignty.
Postscale is operated in Estonia with primary production service data hosted in the EU/EEA. Mailtrap's current GDPR documentation describes a US operator and US data hosting.
Operated by an EU companyEU/EEA-hosted primary service dataStandard GDPR DPA and documented subprocessors
The data-sovereignty differences.
Focus on the current operator and hosting posture, not an announced future change.
Current data location
- Postscale
- Primary production service data is hosted in the EU/EEA.
- Mailtrap
- Mailtrap's GDPR page says data is hosted in the United States on AWS us-east-1 and Google servers.
EU storage status
- Postscale
- EU/EEA hosting is the current default posture for primary service data.
- Mailtrap
- Mailtrap's current documentation states an intention to offer EU storage. Confirm availability before relying on it.
CLOUD Act consideration
- Postscale
- The operator is an EU company. Disclosed subprocessors and transfer safeguards still belong in your review.
- Mailtrap
- Mailtrap's US operator is within US jurisdiction. US law can reach data a covered provider controls even when stored abroad.
Verified 11 September 2026.
Postscale DPAMailtrap GDPRMailtrap DPAMailtrap privacy18 U.S.C. § 2713
Frequently asked questions
Where does Mailtrap currently host data?+
Mailtrap's GDPR page says data is hosted in the United States on AWS us-east-1 and Google servers. The same page states an intention to offer EU storage, so confirm current availability directly before treating that as an active control.
Who operates Mailtrap?+
Mailtrap's DPA and privacy policy identify Railsware Products Studio LLC, a Delaware company with a US address, as the service provider and data-processing party.
Does Mailtrap provide safeguards for EU transfers?+
Yes. Mailtrap documents the EU-US Data Privacy Framework and Standard Contractual Clauses. These are transfer safeguards; they do not change the stated operator or current storage location.
What does the CLOUD Act mean here?+
The CLOUD Act clarified that a covered US provider must comply with valid US legal process for data in its possession, custody, or control, including data stored abroad. It does not provide automatic government access.
Does Postscale replace Mailtrap Email Sandbox?+
No. Postscale provides production sending and logs, but not Mailtrap's dedicated fake-SMTP sandbox inbox. Keep that development workflow if it is useful while moving production delivery separately.
How do I migrate from Mailtrap Email Sending?+
Verify a Postscale domain, replace the API endpoint and token or SMTP credentials, import suppressions, map event and inbound webhooks, test production delivery, and leave any independent sandbox workflow unchanged.
Move production email under an EU operator.
Open a Postscale account, verify a domain, and test your sending and inbound workflows.