Cycling through all six. Tap any point to stop.

Measured on six things

Securely Convert OST Files to Accessible PST Format

Security

HTTPS enforced and SPF set, but HSTS, CSP, frame protection, X-Content-Type-Options, Referrer-Policy and Permissions-Policy are all missing (3/12 checklist). No SOC 2, ISO, pen-test or bug bounty; 'virus-free' is asserted, not audited.

Screenshots

1 / 4

WholeClear OST to PST Converter

About this app

WholeClear OST to PST Converter is an email recovery and migration software that converts inaccessible, orphaned or offline OST files to Outlook-compatible PST formats. It retrieves emails, contacts, calendars, tasks, notes, journals, attachments and maintains the folder organization, message properties, formatting and embedded data. The software selectively exports mailboxes and migrates from OST files without connecting to the original Exchange or IMAP account. The conversion engine is suitable for recovering data from broken or disconnected Outlook profiles and exporting mailbox contents for archiving or transfer. The app is compatible with Microsoft Outlook 2021, 2019, 2016, 2013, 2010 and previous versions. The software is developed for Windows systems, macOS and Linux platforms.

Key features

1Converts inaccessible or orphaned OST files to PST without requiring Outlook or an Exchange connection.
2Selective export: preview the OST tree and convert only chosen folders or items, preserving hierarchy and metadata.
3Free tier converts the first 25 files; runs on Windows, macOS and Linux across Outlook 2003-2021 editions.

Target customer profile

Drawn from the product itself, not from a survey.

Demographic

IT administrators in small to medium businesses

Pain points

OST files inaccessible due to Exchange server issues, data loss risk

Primary needs

Reliable, quick conversion of OST to PST without data loss

Demographic

Individual Outlook users with corrupted OST files

Pain points

Unable to access emails and contacts, need to migrate to PST

Primary needs

Easy-to-use tool to recover and convert OST files independently

Demographic

Freelancers and consultants using Outlook for client communication

Pain points

Need to archive emails and move data between systems

Primary needs

Affordable, efficient OST to PST conversion with selective export

Scout Review

Written by AI from measured evidence, scored out of 100.

WholeClear OST to PST Converter is a functional, no-nonsense utility for a genuinely painful problem: your Exchange server died, your OST file is stranded, and you need your mail back in Outlook. It does the core job — preview, selective export, folder hierarchy preserved, no Outlook or Exchange required — and it lets you try 25 files free before paying. The site is fast (Lighthouse 88 mobile / 98 desktop) and the accessibility scan is decent at 92. But the design is dated, the pricing page is an over-engineered configurator, and the security posture is thin: three of twelve header checks, no DMARC, no audits, no bug bounty. It is a competent mid-tier tool in a crowded category, priced and positioned to compete on simplicity rather than depth. If you need one OST converted today and you want to test it first, it will do the job. If you need enterprise-grade assurance around mailbox data, look elsewhere.

Measure by measure

Usability

Solid utility flow: preview, selective folder export, free 25-file trial, and a manual plus install guide. But the build-your-own pricing configurator and dense feature walls add friction before you can just convert a file.

Design

Dated but functional. The homepage hero is clear, yet 14 checklist items in two dense columns plus a competing sidebar and 'NOT ACTIVATED' badges make it feel unfinished. The app UI shows a legacy green-title-bar Windows wizard.

Speed

Lighthouse mobile 88/100 (LCP 3.3s, CLS 0.002, TBT 0ms) and desktop 98/100. The page is stable and non-blocking; the 3.3s mobile LCP is the only real drag. No conversion-speed benchmarks published.

Security

Accessibility

Lighthouse accessibility 92/100, with failing audits for non-sequential headings, color-only link distinction, and a missing main landmark. No WCAG statement or multi-language support; runs across Windows, macOS and Linux.

Growth

A real, specific pain — orphaned OST files when Exchange dies — with clear segments (SMB IT admins, freelancers, individual Outlook users). Differentiated by offline, self-dependent conversion, but the OST-to-PST category is crowded and the wedge is narrow.

Improvement areas

Security headers are largely absent (3/12) and no SOC 2, ISO, pen-test or bug bounty backs the 'virus-free' claim.
Dated UI and homepage: legacy green-title-bar app screenshot, dense two-column feature walls, and 'NOT ACTIVATED' badges.
Pricing is a build-your-own-suite configurator across 3 OSes and 3 tiers, adding friction to a single-product purchase.

Design & Usability

WholeClear OST to PST Converter looks and behaves like a competent utility that never got a design pass. The homepage hero is legible and the CTAs are obvious, but the page then buries you: fourteen blue-check features in two tight columns, a sidebar stacking download and pricing buttons next to a system-requirements box, and a formats list where nine entries wear gold 'NOT ACTIVATED' badges. The app screenshot shows a classic Windows wizard — Source, Explorer, Destination, Convert — with a file tree and message preview, which is genuinely the right shape for this job, just rendered in dated green-title-bar chrome with a blurry preview pane. Usability is the stronger half: preview before export, selective folder conversion, a free 25-file tier, and a manual plus install guide are exactly what a nervous admin wants. The friction is the pricing page, a build-your-own-suite configurator across three OSes and three tiers that turns a one-file conversion into a shopping decision. It works; it just makes you work too.

Speed & Security

Speed is this product's cleanest win. Lighthouse puts mobile performance at 88/100 with an LCP of 3.3s, CLS of 0.002 and TBT of 0ms; desktop hits 98/100. That is a stable, non-blocking marketing site, and the only soft spot is the mobile LCP, which is fine for a page this content-heavy. No conversion-speed benchmarks are published, so the app's own throughput is unverified. Security is where it falls down. HTTPS is enforced and SPF is configured, but the probe found no HSTS, no CSP, no frame protection, no X-Content-Type-Options, no Referrer-Policy and no Permissions-Policy — three of twelve checklist points. DMARC is missing too. There is no SOC 2, ISO certification, penetration test or bug bounty, and the site's claim that the software is 'totally free from viruses' is marketing, not an audit. For a tool that handles mailboxes and attachments, that is a thin security story.

Accessibility & Growth

Accessibility lands at a respectable 92/100 on Lighthouse, but the failing audits are telling: heading elements out of sequential order, links distinguishable only by color, and no main landmark. Those are the cheap fixes that separate 'passes the automated scan' from 'actually usable with a screen reader.' There is no WCAG conformance statement and no multi-language support, though the tool does run on Windows, macOS and Linux. Growth is a judgement on the idea, and the idea is sound: OST files get orphaned when Exchange breaks, and WholeClear converts them to PST without needing Outlook or Exchange installed. The target segments are specific — SMB IT admins, freelancers, individual Outlook users with a corrupted profile — and the offline, self-dependent angle plus a free 25-file tier is a real wedge. The limit is the category: OST-to-PST conversion is a crowded, mature market with entrenched names, and nothing here suggests a structural advantage that incumbents cannot copy. It can win on price and simplicity; it will not win on moat.

Conclusion

The honest read: this is a utility that knows its job and does it, wrapped in a website that has not been touched since the wizard era. The free 25-file tier is the right call — it lets you verify the conversion quality on your own corrupted OST before handing over money, which is the only test that matters for recovery software. Do that first. Check that your attachments, calendar items and folder structure survive intact, because that is where cheap converters quietly fail. If the output is clean, the price is reasonable and the offline workflow is a genuine convenience. If it is not, you have lost nothing but an afternoon. Either way, do not judge it by the landing page — judge it by whether your mail comes back.

Suggestions for improvement

Publish a security page with a real audit or pen-test result; 'virus-free' is not a security claim anyone can verify.
Add HSTS, CSP, X-Content-Type-Options and a Referrer-Policy — these are one afternoon of header config, not a project.
Replace the build-your-own-suite pricing configurator with a simple three-tier table for the OST to PST product specifically.
Fix the accessibility failures: sequential heading order, underline links so color is not the only cue, and add a main landmark.

How we score

Alternatives comparison

Named competitors, point by point. Nobody paid to appear here or to be left out.

	WholeClear OST to PST Converter
Platform support	Windows, macOS and Linux	Not specified in provided details
Requires Outlook or Exchange installed	No — self-dependent conversion	Not specified in provided details
Free trial / free conversion tier	Free conversion for first 25 files	Not specified in provided details
Selective folder/item export	Yes — preview tree and choose folders/items	Not specified in provided details
Published security certifications	None found (no SOC 2/ISO/pen-test)	Not specified in provided details