EML Viewer — Privacy Policy

Effective: 2026-05-22

EML Viewer is my hobby project — a small Android app for opening .eml, .msg, and winmail.dat files on your phone. Everything you open is read locally; nothing is sent to me or to a server I run. The app is also excluded from Android's automatic backup, so its data does not follow you to a new phone.

What uses the internet

The home screen shows one ad from Google AdMob. When the ad loads, Google receives standard ad-request information such as your IP address and basic phone details, handled under its own privacy policy (Google Privacy Policy; how Google uses information from apps that use its services).

If the app crashes, an anonymous report may go to Firebase Crashlytics so I can fix the bug (Firebase privacy and security). Before a report leaves your phone, file paths, web addresses, email addresses, and content identifiers are stripped from log messages and exception text, and no user ID is attached. The stack trace (class names and line numbers, which carry nothing from your emails) is kept so the bug can still be located.

Features you choose to use

A few features only run when you tap something:

• Verify DKIM runs one public DNS lookup for each DKIM signature on the email (most emails carry one) to check that the email is genuine.
• Check now in the headers dialog asks the certificate issuer whether a digital signature is still valid; the issuer sees your IP and which certificate you asked about.
• Allow on the "Allow external content?" prompt downloads remote images and stylesheets over HTTPS for that one email. If an email's resources are only available over plain HTTP, the app asks separately and defaults to blocked.
• Sharing, exporting, or opening an attachment in another app sends data only to wherever you picked.

Contact

Email: elms.shriek.4t@icloud.com

Changes

Any update to this page bumps the Effective date at the top, and a short summary of what changed is added below.