Comparison

MailPeek MSG Viewer vs MBOX Reader · Opener · Convert

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

MailPeek MSG Viewer

Features
Read full description

Open Outlook MSG, EML, MBOX and winmail.dat / TNEF files on Mac, iPhone and iPad. MailPeek makes Outlook message files easy to open and read without sending anything to the cloud. Open files, read messages, save attachments, and use headers or raw source only when you need more detail. Remote content is blocked by default, so emails cannot silently load external tracking resources unless you allow it. Features: • Open .msg, .eml, .mbox, .mht and .mhtml files • Open winmail.dat / TNEF attachments and extract embedded files • Read HTML, plain text and RTF message bodies • Save attachments quickly • Search by sender, recipient, subject and filename • Native interface with Dark Mode and Quick Look support • Block remote content by default to prevent external tracking • View Email, Headers and Source in one app • Export emails as PDF or share them directly • Export contacts in multiple formats • 100% local processing, nothing sent to the cloud • One-time purchase for Mac, iPhone and iPad – no subscription Built for everyday access to Outlook message files, with extra detail available when you need it.

About

MBOX Reader · Opener · Convert

Easily open, read, and search large MBOX email archives on your Apple devices. Convert emails to various formats like PDF, CSV, or JSON, and extract contacts. All processing happens offline for maximum privacy.

Highlights
  • Open MBOX and MBX archives
  • Read emails with attachments
  • Full text search
  • Export attachments to ZIP
  • Convert to PDF, CSV, JSON
  • Extract contacts as vCards
  • Offline functionality
Features
Read full description

MBOX Reader is the fastest way to open, read, search and convert MBOX email archives on your iPhone, iPad and Mac. Stuck with a huge .mbox or .mbx file you can't open? MBOX Reader loads it in seconds, even archives with tens of thousands of messages, and shows every message exactly as it was sent. KEY FEATURES • Open .mbox and .mbx archives from Files, Mail, Safari, AirDrop and any other app (MBOX Opener) • Read every message exactly as sent: sender, recipients, date, formatted body and attachments • Lightning fast full text search across the whole archive • Browse, preview and save attachments, or export them all as a ZIP (Compressed MBOX Viewer) • Works fully offline, so nothing is ever uploaded CONVERT AND EXPORT • Export single messages to PDF (MBOX to PDF) • Convert a whole archive to CSV for spreadsheets, or to JSON (MBOX Converter) • Extract every sender and recipient as a vCard contact (Konverter) • Split a large archive into smaller MBOX files • Combine several MBOX files into one archive PRIVATE BY DESIGN Your email never leaves your device. No account, no sign in, no tracking. Everything happens on device, even offline. MBOX Reader turns an archive you couldn't open into something you can read, search, convert and share in seconds.

Screenshots

MailPeek MSG Viewer4 screens
MBOX Reader · Opener · Convert4 screens

Verdict

The call

The clearest difference is price: MBOX Reader · Opener · Convert at Free against MailPeek MSG Viewer's $3.99. MBOX Reader · Opener · Convert also leads on update cadence (every 3 days vs every 4 months). MailPeek MSG Viewer's advantage is in-app purchases (none vs 8). On ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

MBOX Reader · Opener · Convert is free to download; MailPeek MSG Viewer costs $3.99 up front. MBOX Reader · Opener · Convert sells 7 in-app purchases, starting at $4.99 per 7 days. MailPeek MSG Viewer asks for nothing beyond the download.

UpkeepUpdate frequency

MailPeek MSG Viewer ships an update every 4 months, MBOX Reader · Opener · Convert every 3 days. The most recent releases landed on September 19, 2026 and September 22, 2026 respectively.

Scorecard3 real differences · 7 level
MailPeek MSG Viewer versus MBOX Reader · Opener · Convert: the parameters behind the verdict, then further details
ParameterMailPeek MSG ViewerMBOX Reader · Opener · Convert
Price$3.99Free — better
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 4 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, MaciPhone, iPad, Mac
Requires iOS17.016.0 — better
Further details — not scored
Size4 MB13 MB
Age rating4+4+
DeveloperSneed IT GmbHRush Tools LLC

In-app purchases

None

MailPeek MSG Viewer

No in-app purchases

7 purchases

MBOX Reader · Opener · Convert

Subscriptions7
  • Pro Weekly3 Days trial$4.997 Days
  • Pro Weekly$9.997 Days
  • Pro Annual$19.991 Year
Show 4 more
  • Pro Annual2 variants$29.991 Year
  • Pro Annual$39.991 Year
  • Pro Annual$49.991 Year
  • Pro Annual$79.991 Year

Questions

Is MailPeek MSG Viewer free?
MailPeek MSG Viewer costs $3.99, with no in-app purchases.
Is MBOX Reader · Opener · Convert free?
MBOX Reader · Opener · Convert is free to download, with in-app purchases available.
Do MailPeek MSG Viewer or MBOX Reader · Opener · Convert have ads?
Neither MailPeek MSG Viewer nor MBOX Reader · Opener · Convert shows ads.
Which is updated more often, MailPeek MSG Viewer or MBOX Reader · Opener · Convert?
MailPeek MSG Viewer ships an update every 4 months, and MBOX Reader · Opener · Convert every 3 days. Most recently, MailPeek MSG Viewer was updated on September 19, 2026 and MBOX Reader · Opener · Convert on September 22, 2026.

Other comparisons