Privacy Policy

How Stackr handles your data.

This Privacy Policy applies to Stackr and explains how we handle your data.

Service: Stackr
Effective date: April 26, 2026

WHO WE ARE

Stackr is a digital service. This Privacy Policy explains what information we collect, how we use it, and the choices you have when using our website and services.

WHAT WE COLLECT

We may collect information you choose to provide, including:

Email address

Substack publication URL

Any information you send when contacting support

If you create an account, we collect the information required to authenticate you and manage your access.

If you purchase a service, payment processing is handled by our payment provider (such as Stripe). We do not store full payment card details on Stackr servers.

We may also collect limited technical data (such as browser type or basic usage data) to operate and improve the service.

HOW WE USE YOUR INFORMATION

We use your information to:

Provide and operate Stackr

Process backup and migration requests

Respond to support inquiries

Manage accounts and access

Send service-related messages

If you opt in, we may also send marketing communications about Stackr. You can opt out at any time.

We only process content and data necessary to perform the requested backup or migration and do not use that content for unrelated purposes.

LEGAL BASIS FOR PROCESSING (GDPR)

If you are located in the European Economic Area (EEA), we process your data based on:

Contract: to provide the service you requested

Consent: where you have given permission (e.g., marketing emails)

Legitimate interests: to operate, secure, and improve Stackr

COOKIES AND LOCAL STORAGE

Stackr uses minimal storage technologies:

Functional cookies to remember interface preferences

Browser local storage to support product functionality (such as saving dashboard data on your device)

We do not use cookies to build advertising profiles or sell user data.

HOW WE SHARE INFORMATION

We may share information with trusted service providers that help us operate Stackr, such as:

Account authentication providers

Hosting and infrastructure providers

Payment processors

These providers only receive the information necessary to perform their services.

We do not sell, rent, or trade your personal information.

We may disclose information if required by law or to protect our rights, users, or service security.

DATA TRANSFERS

Your information may be processed in countries outside your own, including where our service providers operate. Where required, we take steps to ensure appropriate safeguards are in place.

DATA RETENTION

We retain personal data only as long as necessary to:

Provide the service

Meet legal obligations

Resolve disputes

Enforce agreements

Data stored locally in your browser (such as local storage) remains on your device until you clear it.

SECURITY

We use reasonable technical and organizational measures to protect your information. However, no system can be guaranteed 100% secure.

YOUR RIGHTS

Depending on your location, you may have rights including:

Access to your personal data

Correction of inaccurate data

Deletion of your data

Restriction of processing

Data portability

Withdrawal of consent

The right to lodge a complaint with a data protection authority

To exercise these rights, contact us at info@migrate-substack.com.

YOUR CHOICES

You can choose not to provide certain information, though this may limit functionality

You can unsubscribe from marketing emails at any time via the email link

CHILDREN

Stackr is not intended for children under 13, and we do not knowingly collect personal data from children.

CHANGES TO THIS POLICY

We may update this Privacy Policy from time to time. When we do, we will update the effective date and post the revised version on this page.