Help GuideLog in to the Mail Assure admin dashboard → Incoming Messages → Search for messages → Select messages → Export / Download. Mail Assure delivers a ZIP file containing individual EML files. Extract the ZIP to get your archived emails, then use Univik Mail Assure Converter to convert them to PST, MBOX, PDF or other formats.
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Log in to the Mail Assure Admin Dashboard
Access your Mail Assure control panel
Open your browser and navigate to your Mail Assure admin panel. You can access it through your N-able partner portal or directly at your Mail Assure domain URL (https://[yourdomain].mailassure.com). Log in using your admin credentials.
Dashboard Overview
Search and Filter Messages
Narrow down the archive to only the messages you need
Before exporting, use Mail Assure's search and filter tools to select only the messages you need. You can filter by date range, sender address, recipient address, subject keyword or delivery status. This is especially important for large domain archives — exporting everything at once can produce very large ZIP files.
Select Messages for Export
Choose all or specific messages from the filtered results
In the message list, use the checkbox in the header row to select all messages matching your filter, or check individual rows for selective export. Once messages are selected, an action toolbar will appear with the export option.
| Date / Time | From | To | Subject | Status | |
|---|---|---|---|---|---|
| 2026-03-22 09:14 | client@partner.com | john@company.com | Q1 Report Review | Delivered | |
| 2026-03-22 08:47 | hr@recruiter.net | hr@company.com | Candidate Shortlist | Delivered | |
| 2026-03-21 17:32 | vendor@supplier.io | finance@company.com | Invoice #INV-2248 | Delivered | |
| 2026-03-21 14:05 | noreply@saas.com | ops@company.com | Monthly usage summary | Delivered |
Initiate the Export
Confirm the export and let Mail Assure prepare the ZIP file
Click Export / Download in the action bar. A confirmation dialog will appear showing the number of messages to be exported and the expected output format. Confirm to start the export process. Mail Assure will begin preparing your ZIP archive in the background.
Download the ZIP Archive
Save the exported ZIP file to your local machine
Once processing is complete, Mail Assure will show a download link in the dashboard or send a notification email with the download link. Click the link to download your ZIP archive to your local machine.
What is Inside the Mail Assure Export ZIP?
When you extract the ZIP file, you will find individual .eml files — one per archived message. Each EML file is a complete email in RFC 5322 format, containing the full message body, all headers and attachments encoded inline.
| Property | Value |
|---|---|
| Container format | ZIP (.zip) |
| Email format | EML — RFC 5322 compliant |
| One file per | Individual archived message |
| Attachments | Encoded inline in each EML file (MIME parts) |
| Headers included | From, To, CC, BCC, Subject, Date, Message-ID, Received, X-Spam and all original headers |
| Filename format | Timestamp-based (varies by Mail Assure version) |
Convert EML Files to PST, MBOX, PDF or Other Formats
Mail Assure EML files cannot be opened directly in Microsoft Outlook, Apple Mail or most email clients. To make your archived emails usable you need to convert them:
- Outlook / Microsoft 365 — Convert EML ZIP to PST using Univik Mail Assure Converter
- Thunderbird / Gmail — Convert to MBOX format
- Legal / Compliance — Convert to PDF with full header preservation
- Archival storage — Convert to MSG, HTML or MHTML for long-term access
Open your Mail Assure ZIP export directly — no manual extraction. Convert to PST, MBOX, PDF, MSG and 10+ formats with complete header and attachment preservation. 100% offline.
Frequently Asked Questions
.eml file per message. Each EML file is RFC 5322 compliant, containing the full message body, all headers (including spam filter headers, routing headers and original sender data) and attachments encoded as MIME parts inside the file..eml files natively. You need to convert the EML ZIP export to PST format first. Univik Mail Assure Converter opens the ZIP directly (no manual extraction) and converts to a fully importable PST file for any Outlook version or Microsoft 365.
Troubleshooting Common Issues
End users only see the export option if it has been enabled by the domain administrator. Log in as a domain admin and go to Settings → Users, find your account and confirm the export permission is enabled. If you are an MSP and cannot see export for a customer domain, check that your admin role has export rights for that domain.
Large exports (tens of thousands of messages) can take several hours. Keep the browser tab open and check back periodically, or wait for the notification email. To speed things up, reduce the scope of your export by narrowing the date range or filtering to a specific user rather than the full domain.
Make sure the download completed fully before attempting to open it. A partially downloaded ZIP will appear corrupt or empty. Check your browser's download manager to confirm the file size matches the expected size shown in the Mail Assure export dialog. If the file is 0 bytes or significantly smaller than expected, delete it and download again.
Mail Assure only archives messages that passed through its filtering at the time they were received. Messages from before Mail Assure was configured for your domain will not be present. Also check that you exported from both Incoming and Outgoing if you need messages in both directions. Spam that was quarantined or rejected may be in a different section of the log.
EML files are plain text files and your operating system may not know which app to open them with. Right-click any EML file and choose "Open with" to select an email client, or use Univik Mail Assure Converter to batch-convert the entire ZIP to PST or MBOX format instead of opening individual files.
Convert your Mail Assure ZIP export to PST, MBOX, PDF or 10+ formats. Opens the ZIP directly — no manual EML extraction. 100% offline.
About This Guide
This guide is written and maintained by the Univik team, developers of file conversion and digital forensics tools since 2013. We verify each guide against the latest versions of each email archive platform. Last verified: March 2026 with N-able Mail Assure admin console.
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