Mail Assure Converter Univik Mail Assure Converter

Excellent TrustRating 4.8 | 412 reviews

Convert N-able Mail Assure Archived Emails to Any Format

Professional Windows software to convert N-able Mail Assure EML archive exports to PST, MBOX, MSG, PDF, HTML and 10+ formats. Loads ZIP exports directly. Batch converts entire domain archives with 100% metadata and attachment preservation.

  • Opens Mail Assure ZIP exports directly — no manual EML extraction required.
  • Converts to Outlook PST, MBOX, MSG, PDF, HTML and 10+ output formats.
  • Domain-level batch conversion — process all mailboxes in one operation.
  • 100% offline — archived emails never leave your machine.

Free Download
100% Secure

 Buy Now - $29

*Free trial converts first 25 emails per archive. Upgrade for unlimited conversion.

Univik Mail Assure Converter

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VirusTotal Verified Safe

Certified Clean by 70+ Antivirus Engines. No malware, spyware or adware.

ZIP + EML Input
10+ Export Formats
Attachments Preserved
Headers Preserved
100% Offline

 Mail Assure Archive Data Preserved During Conversion

 Key Features

Powerful Mail Assure Conversion Features

Built specifically for N-able Mail Assure archive exports. Handles ZIP containers, EML batches and domain-level archives that generic email converters fail to process correctly.

ZIP Input

Direct ZIP Archive Input

Open Mail Assure ZIP exports directly without extracting first. The converter reads the container and processes all EML files automatically with no manual preparation required.

Batch

Domain-Level Batch Conversion

Process complete domain archive exports in one operation. Handles archives with hundreds of thousands of emails across multiple mailboxes simultaneously with consistent quality.

PST

Outlook PST Output

Convert Mail Assure EML archives to fully importable Outlook PST files. All emails, attachments and folder structure preserved for direct import into any Outlook version or Microsoft 365.

Attachments

Complete Attachment Preservation

Every attachment in Mail Assure archived emails is preserved — documents, images, PDFs, spreadsheets and archives. Inline images and embedded content transfer intact to all output formats.

Headers

Forensic-Grade Header Preservation

Retains all original headers — routing, Message-ID, X-Spam scores, SPF/DKIM/DMARC results, timestamps and MIME content types. Essential for legal admissibility of email evidence.

Filter

Date Range & Sender Filtering

Export only emails from a specific date range, sender address or domain. Ideal for compliance exports, eDiscovery requests or migrating a targeted subset of a large Mail Assure archive.

Folder

Inbound / Outbound Separation

Mail Assure archives inbound and outbound messages separately. The converter recognises this structure and maintains correct folder mapping in PST, MBOX and all output formats.

Offline

100% Offline Processing

No internet required. Archived emails with sensitive business correspondence, financial data or legal communications are processed entirely locally. Never uploaded anywhere.

Preview

Email Preview Before Conversion

Browse archived emails before exporting. Preview message body, header details and attachment list. Verify content and select exactly which emails to include in the conversion output.

Naming

Custom Output Naming

Configure output filenames using Subject, Date, Sender or Message-ID patterns. Organise converted emails for easy integration into document management systems or legal review platforms.

Large

Large Archive Handling

Stream-based processing handles Mail Assure exports containing 500,000+ emails without memory issues. RAM usage stays stable throughout regardless of archive size or email count.

Unicode

Full Unicode & Multi-Language

Complete support for international characters in archived emails — Chinese, Japanese, Korean, Arabic, Hebrew, Cyrillic. No encoding issues or garbled text in converted output.

Everything Preserved from Mail Assure Archive During Conversion

From / To / CC
All Attachments
Date & Time
Subject Line
Folder Structure
Inline Images
MIME Headers
Hyperlinks
Reply-To / BCC
HTML Formatting
Message-ID
SPF / DKIM Results

 Simple Process

Convert Mail Assure Archives in 4 Easy Steps

No technical knowledge required. Load your Mail Assure export, choose a format and convert in minutes.

1

Load Archive

Click "Add ZIP" to import your Mail Assure domain export directly, or "Add Folder" for extracted EML files. Drag & drop supported.

2

Preview & Filter

Browse archived emails, verify content and apply optional date range, sender or subject filters to export only the emails you need.

3

Select Format

Choose PST for Outlook, MBOX for Thunderbird, PDF for compliance, MSG, HTML or any of 10+ formats. Configure naming and folder handling.

4

Convert & Export

Click "Convert" and watch real-time progress. Converted files appear in your destination folder instantly with a detailed conversion report.

 Supported Input Formats

What Mail Assure Archive Exports Are Supported

The converter supports all N-able Mail Assure export types across all Mail Assure versions.

ZIP Export

Mail Assure ZIP Export

Domain archive ZIP file

✓ Fully Supported
EML Files

EML Files (RFC 5322)

Extracted individual emails

✓ Fully Supported
EML Folder

EML Folder Structure

Directory of EML files

✓ Fully Supported
Inbound Outbound

Inbound / Outbound

Separate archive folders

✓ Fully Supported
Domain Export

Domain-Level Export

All mailboxes in one archive

✓ Fully Supported
Mailbox Export

Mailbox-Level Export

Per-user archive export

✓ Fully Supported
Historical

Historical Data Import

Pre-deployment archives

✓ Fully Supported
All Versions

All Mail Assure Versions

All N-able releases

✓ Fully Supported

 Why You Need This

Why Convert Mail Assure Archives?

Mail Assure EML exports cannot be opened in Outlook, Gmail or most email clients directly. A dedicated converter makes archived emails accessible and usable.

Platform Migration

Platform Migration

Moving from Mail Assure to another archiving solution? Export your entire archive and convert to MBOX, PST or EML required by your new platform in one batch operation.

✓ Full archive portability

Compliance

Legal & Compliance eDiscovery

Legal teams require email evidence in PST or PDF format. Convert Mail Assure archives with complete header preservation for FRCP, SOX, GDPR and HIPAA compliance.

✓ Forensic-grade output

Outlook Access

Microsoft 365 / Outlook Access

Mail Assure EML exports cannot be opened in Outlook directly. Converting to PST lets users import historical archived emails into Microsoft 365 or any Outlook version immediately.

✓ Direct Outlook import

Backup

Permanent Offline Backup

Create format-agnostic offline archives before a Mail Assure subscription lapses. PDF and HTML exports give permanent, application-independent access to email records.

✓ Future-proof archives

Forensics

Digital Forensics

Investigators processing Mail Assure archives as evidence need offline, non-destructive extraction with full header chain. Convert without modifying source files, preserving chain of custody.

✓ Chain of custody intact

Thunderbird

Thunderbird / Gmail Import

Convert Mail Assure archives to MBOX format for direct import into Thunderbird, Google Workspace or any email client using standard Unix mailbox format for cross-platform migration.

✓ Cross-platform migration

 Export Formats

Convert Mail Assure to 10+ Formats

Choose the output format that matches your destination — Outlook migration, Thunderbird, compliance archiving, forensic analysis or long-term storage.

📊
PST
Outlook Data
📦
MBOX
Thunderbird
📨
MSG
Outlook Message
📄
PDF
Document
🌐
HTML
Web Page
📧
EML
Email Message
📑
MHTML
Web Archive
📝
RTF
Rich Text
📋
TXT
Plain Text
📊
CSV
Spreadsheet

 Professional Use Cases

Who Uses Mail Assure Converter

Trusted by MSPs, IT administrators, legal teams and forensic analysts managing N-able Mail Assure deployments.

🏚

Managed Service Providers

MSPs offboarding a client from Mail Assure need to export the entire domain archive in a usable format. Batch conversion handles multi-domain, multi-mailbox exports in one pass.

🔍

Digital Forensics Analysts

Forensic investigators extracting evidence from Mail Assure archives need offline, non-destructive conversion with full header and metadata preservation for court proceedings.

⚖

Legal & Compliance Teams

Legal professionals processing Mail Assure archives for eDiscovery or regulatory audits require PST or PDF output with complete headers intact for FRCP and HIPAA evidence requirements.

💼

IT Administrators

IT admins migrating away from Mail Assure or fulfilling GDPR data portability requests need a reliable tool to export complete mailbox archives without manual EML-by-EML handling.

📋

Compliance Officers

Creating permanent PDF archives for SOX, HIPAA or FRCP retention requirements. Convert Mail Assure archives to tamper-evident PDF format for long-term regulatory storage.

📚

Researchers & System Integrators

System integrators seeding new email platforms with historical Mail Assure data. MBOX and EML output integrates directly with virtually all modern platform import pipelines.

 Customer Reviews

Trusted by IT Professionals & MSPs

Verified reviews from MSPs, forensic analysts and IT administrators who converted their N-able Mail Assure archives.

“
★★★★★

We were offboarding a client from Mail Assure and needed their 3-year archive as PST. This processed the entire ZIP export in under an hour. Every attachment and folder structure came through perfectly. Saved us days of work.

DK

David K.

MSP Technical Director, London

“
★★★★★

We needed Mail Assure exports converted to PDF for a HIPAA audit. The header preservation is exactly what compliance requires — routing headers, timestamps, SPF results all intact. The only converter that gets this right.

AP

Anita P.

Compliance Manager, Healthcare Group

“
★★★★★

Processing Mail Assure archives as digital evidence for litigation. The offline processing and complete X-header chain is critical — other converters stripped them entirely. Univik is the only tool that handles Mail Assure exports properly.

MF

Marco F.

Digital Forensics Analyst, Milan

 Simple Pricing

Choose Your License

One-time payment, lifetime license. No subscription fees. Free updates included.

Free Trial

$0

Try before you buy

  • 25 emails per archive
  • All 10+ export formats
  • Full preview features
  • No time limit
Download Free

Personal License

$29/lifetime

Most popular

  • Unlimited conversion
  • All 10+ export formats
  • 1 PC activation
  • Free lifetime updates
  • Email support
Buy Personal — $29

Business License

$99/lifetime

For MSPs & teams

  • Everything in Personal
  • 5 PC activations
  • Commercial use allowed
  • Priority phone support
  • Volume discounts available
Buy Business — $99

 Help Desk

Frequently Asked Questions

Common questions about converting N-able Mail Assure email archive exports.

N-able Mail Assure exports archived emails as a ZIP file containing individual EML files — one .eml per message, compliant with RFC 5322. When you request an archive export from the Mail Assure admin panel, you receive a ZIP download link. Univik Mail Assure Converter reads this ZIP directly without any manual extraction of individual files.

Yes — this is the most common conversion use case. Mail Assure EML files cannot be opened directly in Microsoft Outlook. Univik Mail Assure Converter converts the entire archive to a PST file importable into any version of Outlook or Microsoft 365. All emails, attachments, headers and folder structure are fully preserved in the PST output.

Yes, completely offline. Univik Mail Assure Converter is a desktop application that processes your archive locally on your Windows PC. No internet connection is required and your email data is never uploaded to any server. Suitable for confidential business correspondence, legal evidence and healthcare data under privacy regulations.

Yes, no size limit. The converter uses stream-based processing to handle Mail Assure exports of any size without loading everything into memory at once. Tested with domain archives containing 500,000+ emails. RAM usage stays stable throughout regardless of archive size.

Yes — the full header chain is preserved. All headers from the original Mail Assure EML files carry through: standard headers (From, To, CC, Subject, Date, Message-ID), routing headers (Received, Return-Path), spam filter headers (X-Spam-Score, X-Spam-Status), SPF/DKIM/DMARC results and all custom X-headers. Essential for maintaining legal admissibility of email evidence.

Follow these steps: (1) Log into your Mail Assure admin dashboard, (2) Navigate to Archive → Export, (3) Select the domain or mailboxes you want to export, (4) Submit the export request — Mail Assure emails a download link when ready, (5) Download the ZIP file, (6) Open Univik Mail Assure Converter, click "Add ZIP" and select your archive, (7) Choose your output format and click Convert. Large domain archives may take several hours to generate.

Yes, 100% attachment preservation. Every attachment in Mail Assure archived emails is preserved: documents (Word, Excel, PDF), images (JPEG, PNG, GIF), archives (ZIP, RAR) and inline embedded content. All attachment types remain fully accessible in the converted output across all supported formats.

Free trial converts the first 25 emails per archive. All features are fully functional during the trial — all 10+ export formats, preview, date filtering and batch processing are available. No time limit. Verify output quality and format compatibility before purchasing a licence ($29 personal, $99 business/MSP).

Minimal requirements:

  • OS: Windows 11, 10, 8.1, 8 or 7 (32-bit and 64-bit)
  • RAM: 2 GB minimum (4 GB recommended for large archives)
  • Disk Space: 50 MB for installation
  • Framework: .NET Framework 4.8 or higher

No SQL Server or any other software dependency required.

Yes. If you only need to browse and read your Mail Assure archived emails without converting them, the free Univik Mail Assure Viewer lets you open ZIP exports and read, search and preview emails at no cost. Use the Viewer first if you are still deciding on a destination format, then switch to this converter when you are ready to migrate.

Still have questions? Contact support or Live Chat

Ready to Convert Your Mail Assure Archive?

Download the free trial and join thousands of IT professionals who trust Univik for email archive conversion.

Download Free Trial Buy License — $29

✓ Free trial (25 emails)   ✓ No credit card required   ✓ Instant download   ✓ Windows 7–11