What PST to MBOX Converter Does

Processes Outlook PST Archives directly on your computer without requiring Microsoft Outlook or additional software to be installed.

Convert multiple files or entire folders of email archives simultaneously in one fast, automated process.

Reads large .pst files in chunks instead of loading the whole file into memory. Test your own file in the free trial.

Displays your original folder layout (Inbox, Sent, Drafts, and custom sub-folders) with live item counts.

Inspect email body formatting, headers (To, From, CC, Date, Subject), and attachments before converting.

Choose exactly which folders you want to convert and uncheck unnecessary folders to save time and space.

All rich text formatting, fonts, colors, inline images, and HTML layouts are retained exactly as created.

All documents, PDFs, photos, and files attached to your emails are converted and embedded safely.

Target specific emails by date range, sender, or subject to export only the information you need.

Automatically escapes body lines starting with From (>From ) to prevent Thunderbird index corruption.

Converts Outlook folders into clean corresponding .mbox files (Inbox.mbox, Sent_Items.mbox) ready for drag-and-drop.

Preserves Message-ID, In-Reply-To, References, and custom headers for seamless message threading in target clients.