SENDMAILER PRO – PRIVACY POLICY
Effective date: 2026-01-11

1. Who we are (Data Controller)
Trade name: DefinedBytes
Legal entity (Data Controller): DefinedBytes Jacek Sosnal (sole proprietorship registered in Poland)
NIP: 8951760884
REGON: 540945171
Contact (privacy): privacy@definedbytes.com

2. What SendMailer Pro does
SendMailer Pro is a desktop application that helps you compose and send emails using your own email account(s).

3. Data stored locally on your device
Depending on features you use, the app may store locally:
– email account configuration (server host/port, username) and authentication tokens (if using OAuth)
– recipient lists and custom fields used for personalization
– email templates, subject/body, attachments (if you choose to store them), and sending history/logs (if enabled)

4. Email sending and third-party providers
When you send an email, the app transmits the message (recipients, subject, body, attachments) to:
– your configured email provider’s servers (SMTP or provider APIs), and
– recipients’ mail servers.

SendMailer Pro does not route your email content through DefinedBytes servers.

5. Google OAuth / Gmail API (gmail.send)
If you connect a Gmail account, SendMailer Pro uses Google OAuth to request permission to send email via Gmail API (scope: gmail.send).
OAuth tokens are stored locally on your device and used only to authenticate and send emails at your request.
You can revoke access at any time in your Google Account security settings.

Important: For Google OAuth verification, the privacy policy must be accessible, hosted on the same domain as the app homepage, and linked from the homepage and the OAuth consent screen.

6. Diagnostics and analytics (Microsoft App Center)
SendMailer Pro uses Microsoft App Center for crash reporting and usage analytics as described in the “DefinedBytes Apps – Privacy Policy (General)”.

7. Retention
– Local app data remains on your device until you delete it or uninstall the app.
– App Center crash/analytics retention is managed by Microsoft according to their services and settings.

8. Security
We use reasonable measures to protect locally stored data.
We recommend protecting your Windows account with a strong password and device encryption.

9. Your rights (EEA/UK) and California (where applicable)
If GDPR applies, you may have rights to access, rectify, erase, restrict processing, object, and data portability.
If you are a California resident and the CCPA applies, you may have certain rights to request information or deletion, subject to legal limitations.
Contact: privacy@definedbytes.com. We do not sell personal information.

10. Changes
We may update this policy. The latest version will be published with a new effective date.