Cycling through all six. Tap any point to stop.

Measured on six things

Merge multiple Outlook PST files into one without size li...

Security

HTTPS is enforced and SPF is set, but HSTS, CSP, frame protection, Referrer-Policy and DMARC are all missing — 3/13 on the header checklist. No SOC 2, ISO or bug bounty page found; privacy and cookie policies are linked.

Screenshots

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DataVare Outlook PST Merge Expert Tool

About this app

DataVare PST Merge Expert is the best solution to merge several PST files into a single unified file with ease. The tool is totally self-contained and has a simple user interface that allows for a quick merging procedure for users of any technical experience. It provides a fast merging process so users can merge huge-sized data simply and securely with no data loss and 100% safe operation. Features Advanced Options: (Optional) Clean combined inbox, ignore empty folders, and include or ignore deleted stuff. Data Integrity: The tool creates a new PST file and maintains the integrity of file and organizational hierarchies and information. Compatibility & Support: Support to merge Unicode & enormous size data; no installation of Outlook necessary, high-level compatibility with Outlook 2021 & lower versions. OS Support: Supports Windows 11, 10, 8.1, 8, 7, and other OS. Use the free trial version now and experience seamless and dependable PST consolidation firsthand.

Key features

1Merge multiple ANSI and Unicode PST files into one, with optional selective folder merging (Inbox, Contacts, Calendars).
2No Microsoft Outlook installation required; supports Outlook 2021 and lower, Windows 11/10/8.1/8/7.
3Free trial available; saves merged PST to a user-chosen local location with folder hierarchy preserved.

Target customer profile

Drawn from the product itself, not from a survey.

Demographic

IT administrators and support technicians

Pain points

Managing multiple PST files from various users, risk of data corruption during manual merges

Primary needs

Efficient, accurate merging of large PST files without data loss

Demographic

Small business owners and office managers

Pain points

Email clutter, difficulty in backing up and archiving scattered PST files

Primary needs

Consolidate emails and contacts into a single file for easier management

Demographic

Individual users with multiple email accounts

Pain points

Multiple PST files taking up space, slow Outlook performance

Primary needs

Merge PST files to reduce clutter and improve Outlook speed

Scout Review

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

DataVare Outlook PST Merge Expert is a competent, dated utility for a real but narrowing problem. The site is fast and the trial is free, but the empty screenshots section, a docs page with no steps, and a thin security header profile hold it back. Against SysTools and Aryson it competes on price and trial, not on anything structurally distinct.

Measure by measure

Usability

Free trial, Windows/Mac downloads and a four-question FAQ are present, and the tool claims no Outlook install is needed. But the docs page is a heading with no steps, and the 10-bullet hero plus dense paragraphs make first-time orientation harder than it should be.

Design

Dated WinForms-style app UI and a homepage that stacks box art, a 10-bullet list and three download buttons above the fold. The Screenshots section is an empty white placeholder, which is a bad look for a tool whose whole pitch is 'see how easy it is'.

Speed

Lighthouse mobile 90/100 and desktop 98/100 with LCP 3.1s, CLS 0.001 and TBT 0ms — a genuinely snappy marketing site. No user complaints about app or page lag surfaced in the collected evidence.

Security

Accessibility

Lighthouse accessibility 94/100, but two real failures: buttons without accessible names and headings out of sequential order. English-only interface, no WCAG statement, and the empty screenshot placeholder adds nothing for screen readers.

Growth

A real, narrow pain point — consolidating scattered PST files — but the pitch is interchangeable with SysTools and Aryson. No wedge beyond price and a free trial, and the legacy-Outlook category is shrinking, not growing.

Improvement areas

Empty Software Screenshots section and a docs page with no actual steps — the two places buyers look first.
Security header profile at 3/13 (no HSTS, CSP, DMARC, Referrer-Policy) for a tool handling email archives.
Two Lighthouse accessibility failures (unnamed buttons, out-of-order headings) and English-only interface.

Design & Usability

The homepage does the functional job — product art, rating, download buttons, feature grid — but the visual audit calls it dated and the empty Screenshots section undercuts the 'simple interface' pitch. Usability is middling: a free trial and a four-question FAQ help, but the docs page is a heading with no steps, and the hero's ten-bullet list plus dense paragraphs make orientation harder than it needs to be. For a utility aimed at IT admins and non-technical office managers alike, the onboarding story should be the strongest part and it isn't.

Speed & Security

Speed is the standout: Lighthouse mobile 90/100 and desktop 98/100, LCP 3.1s, CLS 0.001, TBT 0ms — the marketing site is genuinely fast and there are no lag complaints in the collected evidence. Security is the weak flank: HTTPS and SPF are in place, but HSTS, CSP, frame protection, Referrer-Policy and DMARC are all absent (3/13 on the header checklist), and there's no SOC 2, ISO or bug bounty page. For a tool that handles email archives, that gap is worth closing.

Accessibility & Growth

Accessibility scores 94/100 on Lighthouse but fails on unnamed buttons and out-of-order headings, and the interface is English-only with no WCAG statement — solid automated numbers, real gaps underneath. Growth is the harder question: merging PST files is a genuine pain point for IT admins and small businesses, but the feature set is essentially identical to SysTools and Aryson, with no wedge beyond a free trial. The category is legacy-Outlook-shaped and shrinking, which caps how far this can travel even with clean execution.

Conclusion

If you're an IT admin with a pile of PST files and no appetite for manual merges, the free trial is a low-risk way to test whether the tool handles your data cleanly. Just don't expect the site to show you what you're buying — the screenshots section is empty, and the docs won't walk you through it. Try before you buy, and keep a backup of the originals.

Suggestions for improvement

Populate the Software Screenshots section with real UI captures — the empty placeholder is the first thing visitors see and it reads as unfinished.
Replace the docs heading-only page with actual step-by-step merge instructions and a short video walkthrough.
Add HSTS, CSP, X-Content-Type-Options, Referrer-Policy and DMARC — the header checklist is at 3/13 for a tool handling email archives.
Fix the two Lighthouse accessibility failures: give buttons accessible names and put headings in sequential order.

How we score

Alternatives comparison

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

	DataVare Outlook PST Merge Expert Tool	SysTools PST Merge	Aryson PST Merge
Merge multiple PST files into one	Yes — merges multiple PST files, ANSI and Unicode	Yes — join, combine or consolidate folders	Yes — merges multiple PST files into one
Selective folder merging	Yes — merge only contacts, inbox or chosen folders	Yes — folder-level selection supported	Yes — selective folder merging
Outlook installation required	No — standalone tool	No — standalone	No — standalone
Password-protected PST support	Not stated on site	Not confirmed from collected evidence	Yes — handles password-protected files
Free trial	Yes — free trial version advertised	Typically offered (not verified in evidence)	Typically offered (not verified in evidence)
Platform support	Windows 11/10/8.1/8/7/XP/Vista; Mac download button present	Windows (per product page)	Windows (per product page)