Corbett

Kerio Migration Tool

Corbett Kerio Migration Tool opens Kerio Connect files on Windows and moves mail to PST, EML, MBOX, PDF, Gmail or Office 365. Folders and attachments stay in place. Try free demo first.

Download free demo Purchase now

4.6 out of 5 from 683 reviews

Works offline on your PC. Corbett never sees your Kerio mail.

Free demo, scanned clean on VirusTotal and a 30-day money-back window.

Lifetime licence from $299 Demo migrates 10 emails per folder

Migration scope

Kerio Migration Tool for Kerio Connect Mail on Windows

Kerio Migration Tool Saves Mail for Any Target

Kerio Connect stores messages as hex named EML files inside #msgs folders so a manual copy is slow to sort. Kerio migration tool opens your Kerio files on Windows and saves mail as PST, EML, MBOX, PDF or HTML or sends it to Gmail, Office 365 and IMAP.

Kept in output

5
  • Email body and headers
  • Attachments
  • Sender and receiver
  • Dates and subjects
  • Folder tree

Kerio input

4
  • Kerio Connect files
  • Mailbox folders
  • Calendars and contacts
  • Tasks and notes

Outputs

10
  • PST
  • EML
  • MBOX
  • PDF
  • HTML
  • TEXT and CSV
  • Gmail
  • Office 365
  • IMAP
  • Thunderbird

Not needed

4
  • Mailbox passwords
  • Extra software
  • Upload to Corbett
  • Subscription

Where Kerio stores your mail

GFI Kerio Connect store directory article lists the default store folder as C:\Program Files\Kerio\MailServer\store on Windows, /opt/kerio/mailserver/store on Linux and /usr/local/kerio/mailserver/store on Mac. Mailboxes sit in the mail folder, with one folder for every domain and user. Kerio Migration Tool opens those Kerio files and saves your mail where you need it.

Export Kerio mailbox to PST

Related pages: MDaemon Migration Tool, Zimbra Migration Tool, CommuniGate Migration Tool, Kerio Backup Tool and IMAP Migration Tool. Other mail files sit on email converter tool page.

Core features

Kerio Migration Tool Features by Screen

Five screens of Corbett Kerio migration tool, in migration order.

Open menu with Email Servers submenu listing MDaemon, Kerio, CommuniGate and Zimbra files

Source files

Open Kerio Files from Email Servers

Select Open, then Email Servers, then Kerio Files. Choose the folder that holds your Kerio files and the wizard brings your mail into its panel.

GFI lists user mailboxes in the mail folder of the Kerio store. Choose the folder of the user whose mail you want to move.

Mail preview with content, message header, hex view and raw message tabs and an attachment menu

Message preview

Preview Kerio Mail Before You Migrate

Click any message and a reading pane opens beside four tabs. Content shows the body, Message Header lists the sender and routing data, Hex View shows stored bytes and Raw Message shows the source.

Right click an attachment for Open, Save or Save All so you check files before migration starts.

Advance Search panel with Search In choices, a From and To date and the Export Options panel

Filters

Filter Kerio Mail by Item and Date

Advance Search lets you search in All, Emails, Calendars, Contacts, Tasks or Notes and set a From and To date. Press Find and tick only the folders you want to move.

Reset clears your filters and folders you leave unticked stay out of the job.

Export menu with email file, document file, email service and email client formats

Output formats

Select Your Kerio Migration Target

The Export menu groups targets. Email Files hold EML, MBOX and PST. Document Files hold PDF, HTML, TEXT and CSV.

Email Services hold Gmail, Office 365 and IMAP and Email Clients hold Thunderbird. Select a service, sign in to the target account and your mail lands there instead of in a file.

PST export options panel with location, open folder after export, leave out greyed out folders, create empty folders and include email headers

Export options

Set Export Options Before You Save

Switch on open folder after export, leave out greyed out folders, create empty folders and include email headers. For PST output, create an individual PST file for every folder so every PST stays small and quick to open.

Select Browse to choose a destination, then Save. Show Error Logs lists any item that fails.

Working process

How to Migrate Kerio Connect Mail in Four Steps

Four steps take your Kerio mail to its target. Try them on a few folders in free demo first.

1

Open Kerio files

Start Kerio migration tool, select Open, then Email Servers and Kerio Files. Choose the folder that holds your Kerio files.

2

Preview and select mail

Your Kerio folders load as one tree. Click any email to preview it, then tick the folders you need.

3

Filter and choose a target

Use Advance Search to limit the job by item type and date. Select Export, then PST, EML, MBOX, PDF, Gmail, Office 365 or another target.

4

Save or send your mail

Set options, select Browse for a folder and press Save. For Gmail or Office 365, sign in to the target account first.

Moving mail to a mailbox is covered in Migrate Kerio to Gmail and Migrate Kerio to Office 365.

Working process

Kerio Migration Tool Video Walkthrough

Prefer text? Open Export Kerio mailbox to PST for every click with screenshots.

Kerio Migration Tool video walkthrough

Extra options

More Kerio Migration Tool Features for Big Jobs

Small options that save hours when you migrate Kerio mail in bulk.

Folder hierarchy

Output follows your Kerio folder tree

No file size limit

Any Kerio size and mail count

Four preview tabs

Content, header, hex and raw message

Advance Search

Item type plus From and To dates

Quick search

Find mail by keyword before export

Attachment menu

Open, Save or Save All from preview

Contacts and calendars

CSV, vCard and ICS saving options

Empty folders option

Keep the full tree, even with no mail

Cloud targets

Send mail to Gmail, Office 365 or IMAP

USB and NAS targets

Save output to external drives and network storage

Thunderbird target

Send Kerio mail to Thunderbird

Error logs

Show Error Logs in Export Options

Output formats

Kerio Migration Tool Output Formats

Kerio migration tool saves mail as files or sends it to mailboxes. Match your target to where your mail will open.

PST

A file Outlook opens

EML

One file for every message

MBOX

One file per folder for Thunderbird and Apple Mail

PDF

Readable pages for filing and records

HTML

Messages that open in any browser

TEXT and CSV

Plain text and sheets of mail details

Gmail, Office 365 and IMAP

Mail lands in the target mailbox

Thunderbird

Mail goes straight to the client

Free demo

Test Kerio Migration Tool on Real Kerio Files

Install free demo, open your Kerio files and choose a target. Free demo migrates 10 emails per folder so your output is quick to check.

Download free demo

Try before you buy

Free Demo vs Full Kerio Migration Tool

Free demo of Kerio migration tool opens, previews and searches your Kerio files. Only migration is capped.

Feature Free demo Full version
Open Kerio files and folders Yes Yes
Preview and search All available All available
Emails migrated per folder 10 Unlimited
Kerio size and mail count Migration stops at 10 per folder No limit
Price Free From $299 one time

Use cases

Who Needs a Kerio Migration Tool?

Anyone who holds mail in Kerio Connect and needs it somewhere else.

IT admins

Move Kerio mailboxes to Office 365 or Gmail when you retire your server.

Teams switching platforms

Save Kerio mail as PST so your team opens it in Outlook.

Legal and compliance teams

Save mail with headers and attachments preserved for review and discovery.

Archive keepers

Save old Kerio mail as PDF or EML files that any program opens.

Owners of a retired server

Open mail from a Kerio store you no longer host.

Selective movers

Search by item type and date, then move only matching mail.

Why Corbett

Why Choose Corbett Kerio Migration Tool?

No subscription

Lifetime price from $299

Works offline

No sign-in and no upload

Originals stay safe

Kerio files stay as they were

envelope-fill

No mailbox passwords

No size limit

Any Kerio size and mail count

Folders kept

Folders and subfolders stay in order

Smart search

Name, subject, To, From and content

30-day refund

Money-back window after purchase

Before migration

Kerio Migration Tool Scope and Limits

Kerio migration tool opens Kerio Connect files and moves mail to files or mailboxes. Here is what that includes and where it stops.

Capability Supported What it means
Kerio to files Yes PST, EML, MBOX, PDF, HTML, TEXT and CSV
Kerio to mailbox Yes Gmail, Office 365 and IMAP sit in the Export menu
Folder tree Kept Output follows your Kerio folders
Item types Searchable Advance Search handles emails, calendars, contacts, tasks and notes
Source Kerio files Stay as they were Output goes to a folder or mailbox you choose
Licence Business or Enterprise Email Servers sit outside the Personal licence
Mac and Linux No Kerio migration tool installs on Windows only

Manual route or tool

Kerio Migration Tool vs Manual Route

GFI documents a manual copy of Kerio EML files. Here is where it stops and where Kerio migration tool takes over.

Job Manual copy Kerio migration tool
Cost Free From $299 one time
Finding one email Open hex named EML files by hand Preview and search by keyword
Folder files Copy five index files for every folder Folders load as one tree
Name clashes Rename files to the next hex value Output goes to a new folder
Target mailbox Copy back into the live store Gmail, Office 365 and IMAP
PST or PDF output Not offered Saved from the Export menu
Search before export Search text by hand Advance Search by item type and date

Manual steps come from GFI Kerio Connect manual restore article. Stop Kerio Connect, copy the EML files, then re-index the mailbox.

Global recognition

Kerio Migration Tool Software Users Trust

Users rate Corbett Kerio migration tool 4.6 out of 5 from 683 reviews and these software directories list it.

  • CNETCNET
  • Download.ioDownload.io
  • UpdateStarUpdateStar
  • TopSoftware AdvisorTopSoftware Advisor
  • SaaSHubSaaSHub
  • UptodownUptodown
  • GoodFirms partner
  • Software Informer award
  • SaaSHub approved
  • Softpedia award
  • SoftwareSuggest award

Specifications

Kerio Migration Tool Specifications

Download details

Download size
87.4 MB
Demo limit
10 items per folder
Delivery
After payment, mail arrives with a download link and a licence key.
Licence
Personal: 5 machines. Business: 25 machines. Enterprise: 100 machines. Lifetime validity.
Download Now

System

Hard disk
150 MB of free space
RAM
4 GB of memory minimum
Processor
1 GHz Intel Pentium minimum and 2.4 GHz advised
Interface
English
Input
Kerio files

Supported editions

Windows 11 (64 bit), 10, 8 and 7 in 32-bit or 64-bit, plus Windows Server 2016, 2012 R2 and 2008.

Start Kerio migration tool with administrator rights.

Corbett has built Windows email utilities since 2020. Setup trouble and first-use questions go to our support desk.

User testimonials

Kerio Migration Tool Reviews

Kerio migration tool shares 683 reviews on software index sites and customer feedback.

4.6 out of 5

Collected across 683 reviews from software indexes and customer feedback. Three reviews below are unedited.

On-premises Kerio to cloud

This is the most effective Kerio migration tool and helps me migrate my on-premises Kerio data to cloud within moments.

Martin Blake

Kerio emails to PST

I received a lot of emails from Kerio and I want to export them in PST format without losing a bit of information. I connected with their support team and they helped me well with all the functionalities. Overall satisfied purchase!

Smith Frew

Bulk Kerio emails to many clients

This Kerio Migrator is the greatest tool for converting bulk Kerio emails to a variety of email clients, servers, and other destinations. Also, they provide dedicated customer support 24*7 via live chat & email support.

Davis Bowker

Before migration

Prepare Your Kerio Files for Migration

Three short checks keep your Kerio migration clean.

Make a Kerio copy

Backup your Kerio store before you start. A spare copy retains your original safe.

Choose all mail or chosen items

Move every folder at once or limit the job to the folders and item types you need.

Leave space for output

PST and PDF output needs free room on the destination disk and one PST for every folder yields small files.

Kerio files need the Business or Enterprise licence. Compare plans on the Corbett buy page.

Best practice

How to Keep Your Kerio Migration Safe

A migration only helps if your mail arrives in full. Four habits keep your data safe through it.

Backup first

Copy your Kerio store before you start. Keep 3 copies on 2 types of media with 1 copy off site.

Start with one mailbox

Migrate one small Kerio folder and open a few emails in your target. Catch a wrong setting before a large job.

Check the count

Compare the message count in the folder tree with the mail in your target before you close the job.

Keep originals until checked

Store your Kerio data until counts match. Delete it only after you open migrated mail.

Common questions

Kerio Migration Tool FAQs

Kerio migration tool steps, formats, limits and licence answers.

What is Kerio migration tool?

Kerio migration tool opens Kerio Connect files on Windows and moves your mail to files or mailboxes. Corbett Kerio Migration Tool saves PST, EML, MBOX, PDF, HTML, TEXT and CSV or sends mail to Gmail, Office 365 and IMAP.

How do I migrate Kerio Connect mail?

Select Open, then Email Servers and Kerio Files and choose the folder that holds your Kerio files. Preview your mail, select Export, choose a target and press Save.

Where does Kerio Connect store mail?

GFI Kerio Connect store directory article lists the default store folder as C:\Program Files\Kerio\MailServer\store on Windows, /opt/kerio/mailserver/store on Linux and /usr/local/kerio/mailserver/store on Mac. Your install can use a different folder name.

Which licence opens Kerio files?

Kerio sits under Email Servers and Email Servers are part of the Business licence at $299 and the Enterprise licence at $499. The Personal licence does not list Email Servers as a source.

Can Kerio migration tool save Kerio mail as PST?

Yes. Select Export, then PST under Email Files. The individual PST option creates one PST file for every folder.

Can Kerio migration tool move Kerio mail to Gmail or Office 365?

Yes. Gmail, Office 365 and IMAP sit under Email Services in the Export menu. Sign in to the target account and your mail lands there.

Can Kerio migration tool send mail to Thunderbird?

Yes. Thunderbird sits under Email Clients in the Export menu.

Can I migrate only some Kerio folders?

Yes. Tick the folders you need or use Advance Search and move only matching mail.

Can I filter Kerio data by item type and date?

Yes. Advance Search handles All, Emails, Calendars, Contacts, Tasks and Notes, with a From and To date.

Does Kerio migration tool keep attachments?

Yes. Attachments stay with every message and the preview menu lets you open or save them before migration starts.

Does Kerio migration tool keep my folder tree?

Yes. Output follows the order of your Kerio folders and the Create empty folders option preserves folders that hold no mail.

Can I preview Kerio mail first?

Yes. Click any message and four tabs open, named Content, Message Header, Hex View and Raw Message.

Can Kerio migration tool save Kerio calendars and contacts?

Yes. ICS, CSV and vCard sit among the saving options and Advance Search limits a job to calendars or contacts.

Does Kerio migration tool have a size limit?

No. Kerio migration tool sets no size cap. Keep free disk space for your output.

Can I move Kerio mail by hand?

Yes. GFI Kerio Connect manual restore article describes stopping Kerio Connect, copying EML files from the #msgs folders and re-indexing the mailbox. Every folder with a #msgs folder needs five index files so the job is slow for many mailboxes.

Will Kerio migration tool change my Kerio files?

No. Output goes to a folder or mailbox you choose and your Kerio files stay where they were.

Does my Kerio data pass through Corbett?

No. Migration happens on your PC with no upload to Corbett. Corbett never sees your Kerio mail.

How many emails can free demo migrate?

Free demo opens your files, shows every folder and gives you every search and preview. Migration stops at 10 emails per folder, enough to test your output before you buy.

Which Windows versions work?

Windows 11 (64 bit), 10, 8 and 7, plus Windows Server 2016, 2012 R2 and 2008. There is no macOS or Linux build so copy your Kerio files to a Windows PC.

How many PCs can one licence activate?

Business handles 25 machines for $299 and Enterprise works on 100 for $499. Both are one time payments with lifetime validity and 24/7 support. Personal handles 5 machines for $99 and does not list Email Servers.

Is there a refund?

Yes. Request a refund within 30 days of purchase. See the refund policy for details.

Can Kerio migration tool open files from MDaemon, CommuniGate or Zimbra?

Yes. MDaemon Files, CommuniGate Files and Zimbra Files sit beside Kerio Files under Email Servers so one wizard handles all four. See MDaemon Migration Tool, CommuniGate Migration Tool and Zimbra Migration Tool.

Kerio guides

Kerio Migration Tool Guides for Common Jobs

Every page below handles one Kerio job and answers questions it raises.

Move Kerio mail

Save Kerio mail as files

Kerio contacts and addresses

Other server pages handle CommuniGate Migration Tool, MDaemon Migration Tool and Zimbra Migration Tool. Save a copy first with Kerio Backup Tool. Account moves use Email Migration Tool or IMAP Migration Tool. Other mail files sit on the email converter tool page, broken archives belong with email recovery software and email viewer software opens saved mail free.

Get started

Migrate Kerio Mail Today

Test Kerio migration tool on a spare Kerio copy first. Kerio files need the Business licence at $299 or Enterprise at $499 and refunds are open for 30 days.

Download free demo Purchase now

87.4 MB · Windows 11 to 7 and Windows Server 2016 to 2008 · 30 day money back