Migrate Zimbra to Carbonio Email: Know Top Ways
Published On - June 16, 2026
Zimbra to Carbonio migration represents an opportunity to adopt a modern collaboration platform without compromising existing data. But it’s not as easy as it looks because there are certain challenges that lie in it, like missing emails, broken folder structure, synchronization issues & downtime. It turns a migration project into an operational problem.
Don’t worry if you are looking for the same migration. Go with this easy walkthrough & get the practical solutions to migrate Zimbra to Carbonio email.
Why are Organizations Moving from Zimbra to Carbonio Email?
Know the basic reasons behind the Zimbra to Carbonio migration:
- Get email calendars, contacts, file sharing, chat, and video conferencing within a unified workspace.
- To scale mailbox resources & collaboration services more efficiently.
- Manage communication & collaboration from a centralized platform.
- Carbonio continues to evolve with enterprise communication needs.
- Analyze existing mailboxes [size, user count, storage utilization, shared mailboxes, and distribution groups].
- Check Carbonio server is installed correctly, fully updated, accessible through the network, and configured for user provisioning.
- Create a complete backup of Zimbra mailboxes before migration [Crucial]
- Inform end users about migration schedules, expected downtime, & post migration requirements.
Related Blog: Check out how you can migrate email from Yahoo to Gmail or Gmail to ProtonMail.
Manual Methods to Migrate Zimbra to Carbonio Email
If you are tech-savvy & want to perform this migration on your own, this section is for you. Here, we have tried to cover all the technical aspects through which you can execute the process manually.
Method 1. Script-Based Migration
With the help of the Carbonio script-based migration approach, IT administrators can transfer data from Zimbra to Carbonio. But make sure you have sufficient knowledge about the Linux server & direct access to both environments.
Step 1. Use the admin account to connect with your Zimbra server.
Step 2. Ensure Zimbra service is in working state by:
zmcontrol status
Step 3. Create a backup directory & then assign permissions with:
chown -R zimbra:zimbra /opt/backups/zmigrate
Step 4. Transfer all domains & email accounts from the Zimbra server with the help of:
zmprov -l gaa > emails.txt
Step 5. Take the help of the following commands to create folders for storing users’ details & password information.
mkdir userdata
Then, export user passwords & account attributes like display names.
for i in `cat emails.txt`; do
zmprov -l ga $i userPassword > userpass/$i.shadow
done
for i in `cat emails.txt`; do
zmprov ga $i | grep -i Name: > userdata/$i.txt
done
Step 6. Use rsync to transfer the migration folder to the Carbonio server.
rsync -avp /opt/backups/zmigrate/* root@NEW_SERVER_IP:/opt/backups/zmigrate/
Step 7. Now, sign in to the Carbonio server, restore the domains, & configure the authentication:
carbonio prov -l gad
for j in `new domains.txt`; do carbonio prov cd $j zimbraAuthMech zimbra; done
Step 8. Use the following commands to create accounts in Carbonio & set passwords:
To restore accounts, start with the createacct.sh script. Then,
#!/bin/bash for j in `new $USERS`
do givenName=$(grep givenName: $USERDATA/$j.txt | cut -d “:” -f2)
displayName=$(grep displayName: $USERDATA/$j.txt | cut -d “:” -f2)
shadowpass=$(new $USERPASS/$j.shadow)
carbonio prov ca $j CHANGEme cn “$givenName” displayName “$displayName”
carbonio prov ma $j userPassword “$shadowpass”done
chmod +x createacct.sh
./createacct.sh
Step 9. Now, transfer from Zimbra to Carbonio email server & manage DNS MX records with:
mkdir MBOX
chown -R zimbra:zimbra MBOX
for email in `new emails.txt`; do zmmailbox -z -m $email -t 0 getRestURL ‘/?fmt=tgz’ > $email.tgz;
Step 10. Verify the migration & ensure all data has been migrated successfully.
Method 2. Take The Help Of Email Clients Like Thunderbird
There is another solution in which you need to take the help of an email client, like Thunderbird, for migration. Let’s understand with the steps:
Step 1. Launch Zimbra desktop & tap on the Preferences.
Step 2. Hit the Import/Export tab & click on the All Folders.
Step 3. Click on the Export tab & browse the destination folder after choosing the specific mailbox.
Step 4. It will download your emails in a TGZ Zip file. Extract the ZIP. As a result, you will receive all Zimbra emails in EML format.
Step 5. Open Thunderbird & install the ImportExportTools NG add-on.
Step 6. Click More, & hit Add Account. Provide Carbonio email address & password. Then configure the account.
Step 7. Tap on the Local Folder of Carbonio & create a new folder. Select the ImportExport Tools & choose the Import EML files.
Step 8. Choose Zimbra emails from the local system & then let Thunderbird sync all EML files in the chosen Carbonio folder.
Manual Ways Seem Complex & Lengthy? If Yes, Try This One
The manual approaches give you liberty to get the successful results, but with certain constraints & disadvantages like,
- Tech expertise needed.
- A good internet connection is required.
- Time-consuming & tedious task to perform.
- A Linux system is required for the command script.
- Not suitable for multiple accounts with a large size.
- High risk of downtime & data loss during migration.
Overcome all these limitations with our straightforward & simple Recoveryfix IMAP migration software. It allows you to migrate multiple Zimbra mailboxes to Carbonio without any hassle. With the tool’s features and embedded filters, users get the specific result while avoiding the risk of data loss.
- Check migration logs carefully for skipped items or errors.
- Confirm attachment accessibility with some sample emails.
- Check login functionality, mail flow, search capabilities, and calendar access.
- Compare mailbox counts [total emails, folder count, sent items, archived messages].
Want To Migrate Zimbra To Carbonio Email Server Successfully? Follow These Practices
Check out some useful guidelines that can help you achieve successful results.
- Test the process using a small group of users first.
- Try to execute the migration process during off-peak hours.
- Keep multiple backup copies until the Zimbra to Carbonio migration is fully verified.
- Track server performance [CPU utilization, memory usage, storage consumption, etc.]
- Document the complete migration process, as it helps for troubleshooting purposes.
Final Words to Migrate Zimbra to Carbonio Email
Careful planning, accurate execution, & thorough validation are required to migrate Zimbra to Carbonio email server successfully. Hopefully, the blog has provided all the aspects in detail to execute the migration either manually or with the right migration software. But as per my advice, if you don’t want to risk your data & need the direct solution, you should go with the suggested software.
