Privacy Policy

1. Introduction

MangaSendr ("we", "our", or "us") is committed to protecting your privacy. This Privacy Policy explains how your personal information is collected, used, and disclosed by MangaSendr. This Privacy Policy applies to our website, and our associated application.

2. Information We Collect

We collect information to provide better services to all our users.

• Personal Information: Name, email address, payment information (processed by our payment providers).
• Kindle Email Addresses: The Kindle email address(es) you provide for the purpose of delivering content to your devices.
• Usage Data: Information about how you use our application, including features used, time spent, and error logs (telemetry) to help us improve stability.
• Device Information: We may collect information about the device you use to access the Software, including the hardware model, operating system and version, and unique device identifiers.
• Uploaded Files: Manga files you upload (CBZ, EPUB, PDF, or image folders) are processed to produce an optimized EPUB for your Kindle. Source files and converted outputs are purged within 24 hours of delivery.

3. How We Use Your Information

We use the information we collect in various ways, including to:

• Provide, operate, and maintain our Software;
• Process and deliver content to your Kindle device at your explicit request;
• Convert uploaded manga files into Kindle-optimized EPUB format;
• Improve, personalize, and expand our Software;
• Understand and analyze how you use our Software;
• Develop new products, services, features, and functionality;
• Communicate with you, either directly or through one of our partners, including for customer service, to provide you with updates and other information relating to the website, and for marketing and promotional purposes (where you have opted in);
• Send you emails;
• Find and prevent fraud.

4. Sharing Your Information

We do not share your personal information with third parties except as necessary to provide our services or as required by law. We do not sell your personal data to advertisers. The third-party service providers we use include:

• Stripe: Payment processing for subscriptions.
• Supabase: Authentication and database services.
• Resend: Transactional and marketing email delivery.
• Vercel: Hosting.
• PostHog (EU region): Product analytics and usage measurement.

These providers only receive the minimum data necessary to perform their respective functions and are bound by their own privacy policies.

5. Uploaded File Handling

When you upload a manga file (CBZ, EPUB, PDF, or a folder of images) to MangaSendr, it is processed on our servers to produce a Kindle-optimized EPUB and then delivered to your registered Kindle device via Amazon's Send-to-Kindle email service, or made available to you as a direct EPUB download.

Source files and converted outputs are purged from our servers within 24 hours of delivery. We keep only a small cover thumbnail and minimal metadata (title, page count, conversion settings) so your library page remains navigable.

You are responsible for the content you upload. MangaSendr is a conversion and delivery tool for files you have the right to read; we do not host or distribute content.

6. Cookies and Analytics

MangaSendr uses the following technologies to maintain your session and improve the Service:

• Authentication Cookies: Session cookies managed by Supabase to keep you signed in.
• Analytics: We use PostHog (hosted in the EU) to collect product usage data such as page views and feature interactions. Data is associated with your account ID after signup so we can measure activation and improve the product. No third-party advertising cookies are used.
• Local Storage: We use browser local storage to remember application preferences and onboarding state.

We do not use third-party advertising cookies or tracking pixels.

7. Marketing Communications

During account registration, you may choose to opt in to receive product update emails from MangaSendr. These emails are delivered via Resend and may include new feature announcements, tips, and product news.

You can unsubscribe from marketing emails at any time by clicking the unsubscribe link included in every email, or by contacting us at contact@mangasendr.com. Unsubscribing from marketing emails does not affect transactional emails related to your account (e.g., password resets, delivery confirmations).

We do not share your email address with third-party advertisers or marketing platforms.

8. Data Security

We use administrative, technical, and physical security measures to help protect your personal information. While we have taken reasonable steps to secure the personal information you provide to us, please be aware that despite our efforts, no security measures are perfect or impenetrable, and no method of data transmission can be guaranteed against any interception or other type of misuse.

9. Your Data Rights

Depending on your location, you may have rights regarding your personal data, including the right to access, correct, delete, or export your personal information. Under the EU General Data Protection Regulation (GDPR), you may also have the right to restrict processing, object to processing, and the right to data portability. To exercise these rights, please contact us at the email provided below.

10. Local Data and Content Privacy

MangaSendr is primarily a local-first application. Your manga library, files, and reading progress are stored locally on your device.

MangaSendr servers never see, store, or process your personal manga files. We do not upload your personal files to our servers unless explicitly required for a feature you have initiated (e.g., sending to Kindle via email), in which case the file is processed in memory and never stored long-term on our infrastructure.

11. Changes to This Privacy Policy

We may update our Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page. You are advised to review this Privacy Policy periodically for any changes.

12. Contact Us

If you have any questions about this Privacy Policy, please contact us at: contact@mangasendr.com