Fact-checked explanations, troubleshooting steps, and architectural breakdowns for common email formats, privacy hazards, and migration workflows.
While both PST and OST files store Outlook data, they serve completely different purposes. A PST is an independent portable archive, whereas an OST is an encrypted offline synchronization cache tied to a specific mail profile.
Google Takeout packages your entire Gmail history into a single compressed MBOX file inside a ZIP container. Here is how to unzip and browse it locally in your browser.
Outlook MSG files use Microsoft proprietary Compound File Binary Format (CFBF). Apple Mail and macOS Outlook cannot open them natively. Here is the local solution.
When Outlook sends Rich Text format emails to recipients using Gmail, Apple Mail, or Thunderbird, it wraps formatting and attachments inside winmail.dat. Here is how to unpack it.
Opening an email that automatically loads external images transmits your IP address, browser fingerprint, and open timestamp back to remote marketing servers. Learn why our viewer blocks them by default.
When Outlook data files fail to open, the issue usually stems from interrupted disk writes, B-Tree index damage, or exceeding 50 GB file limits. Here are realistic recovery steps.