A 2GB Inbox.dbx file should be handled through a controlled DBX to PST process, not repeated manual import attempts, because the file can stop midway again.
Reason Behind Inbox. dbx Import Failure
Large Outlook Express DBX files may fail due to old mailbox structure, heavy attachments, or size-related reading issues during import.
Recommended Pre-Conversion Checks
- Create a separate backup of Inbox.dbx
- Keep the original file unchanged
- Check whether the DBX file opens on an old Outlook Express system
- Avoid moving the full mailbox in one attempt
- Verify a few emails with attachments first
Windows-Based DBX to PST Option
When manual import keeps stopping, this offline tool,
GainTools DBX to PST Converter, can be tested. It scans selected DBX files and saves the mailbox as a PST file locally for Outlook use.
Final Verification Before Outlook Use
Use the trial on sample emails first. If the PST opens correctly, continue with the full 2 GB DBX file.
