Export Outlook offline OST files to MHTML format
⚙ 100% Standalone Utility — export Outlook offline Outlook Offline Storage Table file (.ost). files to Single-file web archive that can embed images and resources. without Microsoft Exchange on-premises mail server. connectivity or Microsoft’s desktop email app. Standalone Softaken tools can run without Outlook installed. installation.
Key Features at One Glance
Available for Windows, Mac, and Linux. Pick your OS, then download or buy. Free demo exports 10 items. No Outlook required.
Load offline OST mail, convert with Softaken, then open MHTML/MHT web archives in a supported browser.
View converted MHTML emails in
Follow the steps on the left. Use the arrows to switch screenshots — click a screenshot to enlarge.
step 1 of 3 · click image to enlarge
See Softaken OST File Exporter add OST files, preview the mailbox in the left pane, and export emails to MHTML — part of the same OST File Exporter family used across Softaken OST conversion tools.
OST to MHTML Converter export complete database of OST file including email messages, contacts, notes, calendars, and many more. The application support entire conversion without any loss of information. Plus, any novice user can easily handle the utility.
Benefit: Export complete OST database.
OST 2 MHTML Converter takes care of every element while export OST emails to MHTML format. The application retains the complete folder structure along with metadata. No changes are made to the original database.
Benefit: Maintains Folder structure.
Once OST file is loaded on the software panel, users get preview of all the folder inside OST file in the left pane. Users can simply select required folders and exclude other folders from the conversion list. Moreover, multiple OST files are converted at a time with ease.
Benefit: Facility to export selective folders.
If users want to filter the database deeply, then they can use 'Advance Filter Options' and can simply filter the database based on from, to, subject and date range criteria. By applying these filters, users will able to migrate MS Outlook OST messages to MHTML as per their choice.
Benefit: Provision for data filtration.
OST to MHTML Migration App is a standalone tool that does not require Exchange Server Connectivity and Outlook installation to export Outlook offline OST files to MHTML format. The application works without any interruptions and errors in the conversion task on Windows, Mac, and Linux.
Benefit: Standalone application.
The program allows export of MS Outlook OST file to MHTML on Windows 11, 10, 8.1, 8, 7 & Other · Mac · Linux. Plus, the installation process is easy and fast.
Benefit: Windows, Mac and Linux supportive application.
MHTML (MIME HTML, often saved as .mhtml or .mht) is a web archive format used to store email content for offline viewing. After you export Outlook offline OST emails into this format, you can open the files in a browser that supports MHTML. A verified customer opened converted messages in Internet Explorer; many people also try Microsoft Edge or Chrome. Use the free demo to confirm viewing works in the browser you prefer.
No. It runs on its own — you don’t need Outlook installed or an Exchange connection. It works as a desktop utility from the Softaken OST File Exporter family on Windows, Mac, and Linux.
Yes for offline, disconnected, or orphaned OST files — no Exchange reconnect or Outlook profile is required. If a damaged file won’t load, try recovery / deep scan in browse settings, or Softaken OST Recovery before export. Preview items in the left pane first.
MHTML export includes email attachments with the messages. There is also a separate Extract Attachments option if you want files saved outside the mailbox. Whether attachments sit inside each .mhtml file or beside it can depend on your data — check with the free demo on a few messages.
Yes. On the export Options tab you can set a Naming Convention for mail files — for example by subject or date — so exported MHTML files are easier to find and sort.
Folder structure and metadata stay intact, and the original OST is left unchanged. Preview email items in the left pane before export so you can confirm inline images, links, and the header fields you need are present.
Yes. Use Advance Filter Options for from, to, subject, and date range, or set Date Range (From / To) on the export Options tab. That way you export only the filtered slice of the OST to MHTML.
The free demo lets you test OST to MHTML conversion and exports up to 10 items so you can check quality first. Full license unlocks unlimited conversion from $49. Available for Windows, Mac, and Linux.
Standalone OST to MHTML export: No Exchange Server connectivity or Outlook installation required. Part of the Softaken OST File Exporter family.
MHTML / MHT web archives: Convert offline OST emails to .mhtml/.mht for offline viewing. Advance Filter & date range. Batch OST migration.
Selective folders & naming: Preview the left-pane folder tree, export selected folders, and use mail naming conventions (Subject / Date) on the Options tab.
Windows 11, 10, 8.1, 8, 7 · Mac · Linux
2024, 2021, 2019, 2016 · ANSI / Unicode
10 items
Full from $49
System requirements for Softaken OST to MHTML Converter on each supported OS.
Desktop installer
Apple desktop build
AppImage & Debian package
| Specification | Details |
|---|---|
| Product Name | Softaken OST to MHTML Converter |
| Version | 16.0 |
| Input | Offline / orphaned Outlook OST |
| Output Format | MHTML / MHT web archives |
| OS Supported | Windows 11, 10, 8.1, 8, 7 & Other · macOS · Linux |
| Outlook Supported | 2024, 2021, 2019, 2016, 2013, 2010, 2007, 2003 |
| Prerequisite | No Outlook / Exchange Server required |
| Processor | Any Pentium Class |
| Memory | 512 MB Minimum |
| Hard Disk | 100 MB of free space for software installation |
| Demo | 10 items |
| Delivery | Electronic · Via Email · Minutes: 15 |
| Language / Support | English · Emails, Chat & Skype |
| Platform | Windows · Mac · Linux |
The free demo exports up to 10 items so you can test OST to MHTML conversion. The full license is unlimited.
| Feature | Free demo | Full version |
|---|---|---|
| Export Outlook OST Emails to MHTML / MHT | Available | Available |
| Complete OST Database & Folder Structure | Available | Available |
| Selective Folders & Advance Filter (Date Range) | Available | Available |
| Batch Migration of Multiple OST Files | Available | Available |
| Standalone — No Outlook / Exchange Required | Available | Available |
| Mail Naming Convention (Subject / Date) | Available | Available |
| Supported on Windows, Mac & Linux | Available | Available |
| Limitation | 10 items | Unlimited |
| Price | FREE | $49 |
Customer feedback on Softaken OST to MHTML Converter.
United Kingdom
I have an OST file of Outlook 2003 as a backup. I tried to open that file but I failed. Your software helped me to read the content of that file by conversion of OST into MHTML format. Now, I can read that OST file using Internet Explorer. I am amazed by this utility.
United States
I have some OST files and I don't have Outlook with me. I want to extract contacts from these files. For this, I used Softaken OST 2 MHTML Converter. The tool helped me to extract contacts from these OST files without any difficulties.
Switzerland
I am very cheerful using this application. I have checked many applications before this. But some of the features of this application amazed me such as deep filters, removal of empty folders, instant conversion, selected folders conversion, etc. Due to lots of features and speedy working, I would like to recommend this application to all the needy users.
Load an offline or orphaned OST file, preview the mailbox, and save messages as MHTML/MHT web archives.
Available for Windows, Mac, and Linux. Pick your OS, then download or buy. Free demo exports 10 items. No Outlook required.
