How to Show Mailbox Size on Zimbra via Command Line

Zimbra is a popular email and collaboration platform that provides various administrative tools to manage your mailbox. If you need to check the size of a Zimbra mailbox, you can use the command line interface (CLI) to retrieve this information. In this step-by-step guide, we will walk you through the process of showing the mailbox size on Zimbra via the command line.

Step 1: Connect to the Zimbra Server:

Open your terminal or SSH into the Zimbra server where your mailbox is hosted. Ensure that you have administrative privileges to access the necessary commands.

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Step 2: Access the Zimbra CLI:

To access the Zimbra Command Line Interface (CLI), enter the following command:

zmprov -l

This command will provide a list of available commands for Zimbra administration.

Step 3: Retrieve Mailbox Size:

To retrieve the size of a specific mailbox, use the following command:

zmmailbox -z -m user@example.com gms

Replace user@example.com with the email address of the mailbox you want to check.

The output will display the mailbox size in bytes, along with other information such as the number of messages, unread messages, and more.

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Step 4: Convert Size to Human-Readable Format:

By default, the mailbox size is displayed in bytes, which may be difficult to interpret. To convert it to a more readable format, you can use the following command:

zmmailbox -z -m user@example.com gms | awk '/mailbox size/{print $3/1024/1024 " MB"}'

This command uses the awk tool to extract the mailbox size from the previous command’s output and convert it to megabytes (MB).

Conclusion:

In this guide, we have shown you how to retrieve the mailbox size on Zimbra using the command line interface. By following these steps, you can quickly obtain information about the size of a specific mailbox. This can be useful for monitoring storage usage, identifying large mailboxes, and managing your Zimbra environment more effectively.

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Remember to replace user@example.com with the actual email address of the mailbox you want to check. Feel free to leave a comment if you have any questions or suggestions for improvement.

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