Convert MSG to MHT lets you turn a single Outlook .msg email into a web‑archive .mht file while keeping key headers such as From, To, Cc, Date and the complete body and attachments. The Subject line is embedded in the archived content so the message remains fully readable in browsers. It processes one email per submission; if you need to convert many messages you would run multiple conversions.

Headers preserved in the archive

The converter reads the Outlook .msg file and extracts the standard email header fields – From, To, Cc and Date – then writes them into the MHT header block. When the resulting web‑archive is opened in a browser or email client, these routing details appear exactly as they did in the original message, keeping the provenance and timeline unchanged.

Body and rich formatting kept intact

All body content from the source .msg, including plain text, HTML markup, tables, styled fonts and inline images, is transferred to the MHT file without alteration. The converter embeds the original Subject line directly into the message body, so the archived file shows the subject at the top just as a typical email viewer would, preserving layout, colors, links and overall reading experience.

Attachments embedded as downloadable parts

Every attachment in the Outlook message – such as PDFs, Word documents, images or other common file types – is packaged as an individual MIME part inside the MHT archive. In the web‑archive view each attachment appears as a clickable link that can be saved, allowing recipients to access the original files directly from the archived message. Typical office and media formats work seamlessly; very rare or proprietary compound files may require a specialized tool.

Limits and scope

One email per conversion: Processes a single Outlook .msg file per submission, producing one .mht file.
File size and retention: Free usage handles smaller files; signing in or using a paid account raises the per‑file size limit. All uploaded and converted files are removed from the server after 24 hours.

How to convert MSG to MHT

STEP 1

Upload your file

Click inside the file drop area to upload your files or drag & drop them.

STEP 2

Convert

Click on the "Convert" button. Your files will be uploaded and converted immediately.

STEP 3

Download

Download link of converted MHT files will be available instantly after conversion.

STEP 4

Feedback

Check conversion results and send us your feedback.

FAQ

Is the email Subject shown in the MHT file?

Yes, the Subject line is embedded directly into the message body of the MHT archive.

Can I download attachments from the MHT output?

Yes, each original attachment is stored as a separate MIME part and appears as a clickable link in the web‑archive.

Are the original From, To, Cc, and Date headers displayed when the MHT is opened?

Yes, those header fields are written into the MHT header block and appear exactly as they did in the source .msg.

What are the file‑size and batch limits for converting MSG to MHT?

Anonymous users can convert smaller files on the free tier; signing in with a free Aspose account raises the per‑file size cap, and paid tiers increase the limit further. Each request still handles exactly one file.

How long are uploaded and converted files retained on the server?

All source and output files are automatically deleted 24 hours after the conversion completes.

MSG to MHT

MHT web‑archive preserving email headers, body and attachments in a single file.