aid4mail /convert /source="C:\takeout\*.mbox" /dest="C:\output.pst" /mboxStructure=filenameAsFolder /skipDuplicates /pstCompress Pitfall 1: Broken Attachments Why: MBOX stores attachments as base64 chunks inside the body. PST expects attachments as separate objects. If the MIME boundary parser fails, attachments become inline text.
# Install dependencies (Ubuntu/Debian) sudo apt install readpst # contains mbox2pst variant pip install mbox-converter pypst convert mbox to pst
If you work with enterprise email, you’ve faced the dilemma: a legacy MBOX file from an old Unix server, Thunderbird backup, or Google Takeout export… and you need it in Microsoft Outlook’s native PST format. aid4mail /convert /source="C:\takeout\*
| Source | MBOX Origin | Pain Point | |--------|-------------|-------------| | Google Takeout (Gmail) | Takeout/Mail/*.mbox | Folder structure lost if you don't use the right tool | | Mozilla Thunderbird | ImapMail/... (no extension) | Each folder is an MBOX file | | Apple Mail (legacy) | ~/Library/Mail/V5/*.mbox | macOS Sierra and earlier | | Old Unix mail servers | /var/mail/username | Single flat file for all incoming mail | Shorten manually or use a tool that truncates
Pre-scan folder names. Shorten manually or use a tool that truncates from the middle, not the end. Pitfall 4: Corrupt From_ Lines Real example: A marketing email with From: "From The Desk Of" <ceo@spam.com> – the From at line start tricks naive parsers into splitting the email.
