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Privacy policy

Last updated: 12 May 2026

This privacy policy explains how Sumezi processes personal data when you use our platform. We process as little data as possible, in line with the General Data Protection Regulation (GDPR).

Who we are

Sumezi is an email editor and newsletter platform, part of the SIMEZU ecosystem. For the data you place in the platform as a user (such as your subscriber lists) we act as a processor on your behalf, the controller.

What data we process

  • Account data (name, email), managed through SIMEZU and passed to us for access.
  • Workspace content: templates, subscriber lists and fields you add yourself.
  • Sending data: send status, opens and clicks, per campaign.
  • Technical data: logs necessary for security and troubleshooting.

Lawful basis & purpose

We process data to provide the service (performance of the contract) and to keep the platform secure and reliable (legitimate interest). We never sell your data and do not use it for advertising.

The role of SIMEZU

Authentication, subscriptions and payments are handled by SIMEZU. For those parts we refer you to the SIMEZU privacy policy. Sumezi itself stores no passwords or payment details.

Sharing with third parties

We only share data with processors needed to deliver the service (such as hosting and, via your SMTP setting, mail delivery). We have a data processing agreement with every processor. Data stays within the EEA, unless otherwise stated and with appropriate safeguards.

Retention

We keep workspace content for as long as your account is active. If you delete a subscriber or workspace, we delete the associated data, except for legal retention obligations and the suppression list needed to avoid re-mailing unsubscribed addresses.

Your rights

Under the GDPR you have the right to access, rectify, erase, restrict and port your data, and you can object to processing. Much of this you manage directly in the app or via SIMEZU. For the rest, we're happy to help.

Contact

Questions about privacy, or a request about your data? Reach us through the contact page. You also always have the right to lodge a complaint with your data protection authority.

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