Contracting operator
- Postscale
- DNScale OÜ, an Estonian company.
- Mailjet
- Sinch Email terms list Mailjet SAS, Mailjet GmbH, or Mailjet SaaS Ltd; the service order identifies the applicable entity.
A focused Mailjet alternative with a clear EU operator.
Mailjet documents EU-only personal-data storage. Postscale offers a single Estonian operator and a narrower product-email boundary; Mailjet's contracting entity depends on the service order.
Focused transactional and inbound emailEU company and EU/EEA-hosted primary service dataStandard GDPR DPA and documented subprocessors
The data-sovereignty picture.
Both services document European hosting. The useful differences are entity clarity and product scope.
Service-data location
- Postscale
- Primary production service data is hosted in the EU/EEA.
- Mailjet
- Mailjet says personal data is stored exclusively in the EU, in Germany and Belgium.
Product boundary
- Postscale
- Focused on transactional sending, inbound rules, masked addresses, authentication, and deliverability.
- Mailjet
- Combines transactional email with campaigns, contacts, automation, and collaborative editing.
CLOUD Act consideration
- Postscale
- The operator is an EU company. Disclosed subprocessors and transfer safeguards still belong in your review.
- Mailjet
- With a European Mailjet entity, this is not a direct operator-level differentiator. Confirm the service-order entity, affiliates, and subprocessors.
Verified 11 September 2026.
Postscale DPASinch Email termsMailjet data locationMailjet security
Frequently asked questions
Does Mailjet store personal data in the EU?+
Yes. Mailjet says personal data is stored exclusively in European Union data centers on Google Cloud infrastructure in Frankfurt, Germany, and Saint-Ghislain, Belgium.
Which company operates Mailjet?+
Sinch Email's terms say the applicable contracting entity appears in the service order. They identify Mailjet SAS and Mailjet GmbH as European entities and Mailjet SaaS Ltd as a UK entity, so verify the order rather than assuming.
Is the CLOUD Act a reason to leave Mailjet?+
Not as a blanket claim. If the service order names a European Mailjet entity, the operator comparison is not the same as a US-provider case. Review which affiliates and subprocessors can access or control the relevant data instead.
Why consider Postscale instead?+
Postscale provides a smaller product boundary around transactional and inbound email, masked addresses, authentication, and deliverability. Mailjet is broader and may be preferable when campaigns, contacts, automation, or collaborative template editing are required.
Does Postscale include marketing campaigns?+
No. Postscale does not provide campaign audiences, marketing automation, or a collaborative campaign editor. Keep Mailjet or use a dedicated marketing platform for those workflows.
How do I migrate from Mailjet?+
Verify a Postscale domain, replace Send API calls and credentials or SMTP settings, import transactional suppressions, map templates and event webhooks, test inbound payloads, and then move transactional traffic gradually.
Give product email a focused EU boundary.
Open a Postscale account, verify a domain, and test your sending and inbound workflows.