PST to MHT

Convert PST to MHT extracts each email from your Outlook .pst file and creates an individual .mht web‑archive that keeps the original headers, body and attachments. All .mht files are then bundled into a single .zip for a one‑step download. The tool processes every message in the uploaded PST as long as the file fits the size limits of your selected tier, so typical PST sizes are fully supported.

Complete message extraction

The converter scans the entire Outlook .pst archive and generates a separate .mht web‑archive for every email it finds. No message is skipped, so the output set mirrors the source folder structure in a flat collection of individual web‑archive files that can be opened directly in a browser or imported back into email clients.

Headers and metadata preserved

Each .mht file retains the original messaging metadata, including From, To, Cc, Date and the full Subject line. The Subject appears inside the archived content exactly as Outlook would display it, ensuring that recipients see the same header information and chronological context when viewing the web‑archive.

Attachments stay attached

All attachments that were part of the source email are embedded within the corresponding .mht file. When the web‑archive is opened, the attachments appear as clickable links or preview icons, allowing users to download or view them without any loss of file type or content, just as they existed in the original message.

Batch download as ZIP

When the source .pst contains multiple messages, the converter bundles every generated .mht file into a single .zip archive. This zip package provides one convenient download link, simplifying the transfer of many web‑archives at once and eliminating the need to handle each file individually.

Supported file sizes

The free tier accepts typical personal .pst files, while signing in or upgrading raises both the per‑file size limit and the number of messages that can be processed in a single batch. This scaling ensures that most regular Outlook archives are fully handled without restriction, and larger corporate archives can be processed by selecting an appropriate paid tier.

Limits and scope

Single‑file submission

One .pst file is processed per conversion request; all messages within that file are converted together.

Flat archive output

Converted .mht files are placed in a single folder inside the ZIP, without recreating the original PST folder hierarchy.