Zimbra Email For WHMCS is an elegant module intended for automated provisioning and detailed control of Zimbra and Zextras Carbonio accounts directly in your WHMCS. With this double integration, the module creates a chance to select a solution that better meets your preferences. Regardless of the choice made, thanks to support for configurable options, your clients will be allowed to apply either a single or multiple different sets of limits to any number of accounts ordered at once. As soon as they finalize the purchase, customers will be able to conveniently handle mailboxes, email and domain aliases, plus distribution lists, as well as quickly access their webmails straight through your client area.

Zimbra Email For WHMCS knits together every single feature you need to stir up your sales, yet could not be simpler and more intuitive in use. Order the module now and let it usher your customers through the smooth and well-ordered management of Zimbra and Zextras Carbonio accounts!

The module is now officially compatible with the Zextras Carbonio platform, providing both you and your customers with greater choice and flexibility in managing your email services within your WHMCS panel.


  • Admin Area

    • Create Account
    • Terminate Account
    • Change Package
    • Change Password
    • Go To Zimbra/Carbonio Webmail
    • Define Products Configuration:
      • Set Zimbra/Carbonio Account Settings
      • Use Class Of Service As:
        • Fixed Choice
        • Allowed Single Choice By Clients
        • Allowed Multiple Choices Of Quota Per Account
        • Custom Settings (Zimbra Only):
          • Select Essential Features
          • Select General Features
          • Select Mail Service Features
          • Select Contact/Calendar/Search/S/MIME Features
      • Set Requirements For Passwords
      • Select Access To Client Area Features
      • Generate Default Configurable Options
      • Enable Metric Billing
    • Log In To Zimbra/Carbonio Administrator Panel On Click
  • Client Area

    • Manage Email Accounts:
      • Create/Edit/Delete
      • View Creation/Last Login Date
      • View Mailbox Quota
      • View/Change Mailbox Status
      • Change Account Password
      • Log In To Mailbox
    • Manage Email Aliases
    • Manage Distribution Lists
    • Manage Domain Aliases
    • Upgrade / Downgrade Account
    • Go To Zimbra/Carbonio Webmail
  • Configurable Options

    • Email Accounts Limit
    • Email Account Size
    • Email Aliases Limit
    • Distribution List Limit
    • Domain Aliases Limit
    • Class Of Service
  • General Info

    • Supports Zimbra 8.5.0 And Later:
      • Zimbra Network Edition (NE)
      • Zimbra Free and Open Source Software (FOSS)
      • Zimbra Enterprise Collaboration:
        • Standard
        • Professional
    • Supports Zextras Carbonio 24.5.0 And Later:
      • Carbonio Community Edition (CE)
      • Carbonio Enterprise Edition
    • Configurable Options Support
    • Integrated With Advanced Billing For WHMCS - Actual Server Resource Usage Billing
    • Integrated With Server Allocator For WHMCS - Automatic Assignment Of Most Suitable Servers To Products
    • Multi-Language Support
    • Supports PHP 8.1 Back To PHP 7.4
    • Supports WHMCS Metric Billing - Integration: Email Accounts, Email Aliases, Distribution Lists, Domain Aliases, Storage
    • Supports WHMCS Server Sync Tool
    • Supports WHMCS Themes "Six", "Twenty-One" And "Lagom WHMCS Client Theme"
    • Supports WHMCS V8.10 Back To WHMCS V8.8
    • Requires ionCube Loader V12 Or Later
    • Easy Module Upgrade To Open Source Version
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Released: Jul 17th, 2024
New Feature
  • Added support for the Zextras Carbonio platform
    Note: The feature works based on the "Class Of Service" configuration in the admin panel, but setting up "Custom Settings" is not yet supported. Please refer to our Wiki for crucial information about enabling the Zextras Carbonio integration
  • Maintenance update and stability optimizations
Bug Fix
  • Fixed options for the "Essential Features" where their settings may have been incorrectly reflected in the Zimbra panel
  • Corrected misplaced language entries for "Calendar", "Briefcase", "Contacts" and "Tasks"
  • Other minor code corrections


Released: May 20th, 2024
New Feature
  • Domain aliases can now be used when creating email aliases - case #328
  • Support for WHMCS V8.7 and previous
Bug Fix
  • Solved issue where the "Quota" field was not displayed when editing an email account, although allowed via the selected "Class Of Service" and the related configurable option was set to "Hidden" - case #226


Released: Aug 2nd, 2023
New Feature
  • WHMCS V8.8 support
  • Implemented language overrides support, enabling the utilization of customized translations
  • Support for WHMCS V8.5 and previous


Released: Jul 3rd, 2023
Bug Fix
  • Fixed case where the module might have caused a fatal error when adding a new server into WHMCS on PHP 8.1 - case #318
  • Resolved problems with using the WHMCS "Server Sync" tool after the module was activated - case #320
  • Eliminated rare fatal error that might have occurred when loading the module settings - case #321
  • Other minor code corrections


Released: Mar 8th, 2023
Bug Fix
  • Eliminated number of "TypeError" entries that could appear after WHMCS daily cron job on PHP 8.1 - case #316


Released: Feb 8th, 2023
New Feature
  • WHMCS V8.7 support
  • Added option to force the password change, upon login to mailbox, when adding the new email account - case #262
  • Select which of the mailbox "Statuses" will be available for clients to choose from when adding an email account - case #288
  • Choose whether to change the "Mail Delivery Status" to disabled, when the domain is suspended, or keep it enabled - case #230
  • Support for Lagom WHMCS Client Theme
  • A service downgrade will now be possible only when the number of currently existing mailboxes is lower than the new limit - case #291
  • The "Class Of Service Name" along with its ID will now be stored in the database to allow several Zimbra servers to work together in a single group - case #272, #289
  • Support for WHMCS V8.3 and previous
  • Support for PHP 7.3 version
Bug Fix
  • Resolved problem with passwords auto-generation when adding a mailbox after pagination on the accounts list was used
  • Fixed cases when a single distribution list or an email alias could still be created even if the limit was set to zero - case #304
  • Eliminated problem with the "Required Product Module '' Missing" error notice that could be displayed in the WHMCS activity logs - case #299
  • Increased limit of the email accounts displayed in the dropdown list when adding an email alias - case #307
  • Other code corrections and improvements


Released: Dec 16th, 2022
New Feature
  • WHMCS V8.6 support
  • Support for PHP 8.1 version
  • Set the password requirements for mailbox creation such as its length, case, number of letters, numeric and special characters - case #263
  • The mail service features in the module settings will be now available for customization only when the related option is chosen for the "Class Of Service Name" option - case #292
  • Requires ionCube Loader V12 or later
  • Support for WHMCS V8.2 and previous
  • Support for PHP 7.2 version


Released: Jun 14th, 2022
New Feature
  • WHMCS V8.5 support
  • Support for WHMCS V8.1 and previous


Released: Jan 13th, 2022
New Feature
  • WHMCS V8.4 support
Bug Fix
  • Fixed compatibility with the Multibrand For WHMCS module where Zimbra management icons in the client area redirected to a wrong brand - case #287


Released: Sep 29th, 2021
New Feature
  • WHMCS V8.3 support
Bug Fix
  • The "Domain Max Size" module option will now properly set the "Domain Aggregate Quota" setting instead of "Domain Quota" in Zimbra - case #281


Released: Aug 10th, 2021
  • Support for WHMCS V7.10 and previous
Bug Fix
  • If the password settings are not set in the product configuration, the invalid password validation error will no longer occur when creating a mailbox - case #282


Released: May 27th, 2021
New Feature
  • WHMCS V8.2 support
Bug Fix
  • Fixed "No memory at line" error that might have occurred in the client area for accounts with a large number of mailboxes created - case #277
  • Slight UI adjustments


Released: Apr 29th, 2021
New Feature
  • WHMCS V8.1 and "Twenty-One" theme support
  • Added "Select All" option to the product features configuration - case #264
  • Support for WHMCS V7.9 and previous
  • Support for PHP 7.1 version
Bug Fix
  • Providing "-1" value in "Default Email Aliases Limit" and "Default Domain Aliases Limit" fields will be now properly treated as unlimited - case #268
  • Fixed problems with setting "Domain Max Size" quota in Zimbra panel - case #271
  • Eliminated: "Failed opening required platform_check.php" error - case #270
  • Assorted corrections related to passwords generation - case #263
  • Providing "-1" value in the "Domain Max Size" field to set it as unlimited, will no longer cause "ZimbraailDOmainQuota value(-10000...) smaller than minimum allowed: 0" error upon account creation
  • Added missing validation of the "Last Name" field to make it required when adding a new email account


Released: Dec 17th, 2020
  • You can now choose whether to display or hide the "Log In To Mailbox" action from the client area - case #256
  • Support for WHMCS V7.8 and previous
Bug Fix
  • Resolved issue that might have caused the "Call to a member function setAttrs() on bool" error when performing daily cron for the account termination - case #261
  • Fixed certain security issues
  • Minor code correction related to WHMCS V8.X


Released: Aug 21st, 2020
New Feature
  • WHMCS V8.0 and PHP 7.4 support
Bug Fix
  • Resolved issue with the "Quota" dropdown that was empty when adding a new email account if the configurable options were generated without any "Class of Service" - case #253


Released: Jul 10th, 2020
Bug Fix
  • Fixed case that could prevent loading product's module settings - case #246


Released: May 27th, 2020
New Feature
  • Support for built-in WHMCS "Metric Billing"
  • Support for built-in WHMCS "Server Sync Tool"
  • Support for built-in WHMCS "Disk Usage" statistics that are updated via system cron automatic tasks
  • Support for WHMCS V7.7 and previous
Bug Fix
  • Zimbra Email sidebar menu will no longer be displayed in the client area if the given product has changed its module type to a different one - case #240
  • Solved problem with "Document parse failed" error that might have occurred when creating a new email account with credentials using non-Latin characters - case #239
  • Resolved integration problems with "WHMCS Bridge" WordPress plugin to prevent "Uncaught TypeError" - case #245
  • Fixed case when the "Allow clients to choose Class Of Service Quota Per Account" setting was not correctly applied for the created service once configurable options were not used - case #236
  • "Filter Accounts By Class Of Service" setting will now properly filter out mailboxes outside the given quota size range from the client area - case #238


Released: Mar 30th, 2020
New Feature
  • WHMCS V7.10 support
Bug Fix
  • When creating or editing the mailbox account, the "Quota" dropdown will now display only class of services that were paid by the client instead of all available ones from configurable options - case #221, #225
  • The built-in default Zimbra mailboxes will no longer be listed in Email Accounts Management - case #223
  • Resolved problems with editing mailboxes after reaching their maximum limit
  • Minor corrections related to the distribution list edition


Released: Dec 6th, 2019
New Feature
  • WHMCS V7.9 support
  • Added possibility to set the custom connection port for clients' mailboxes when using the "Log In To Mailbox" option - case #212
Bug Fix
  • Fixed problem that could have caused dates on the module being set to "01/01/1970" - case #211
  • Corrected display of classes when the "Class Of Service Quota Per Account" option is set along with generated configurable options - case #213
  • Resolved problem with authentication with Zimbra server if there were certain special characters used for a password - case #215
  • Solved issue with PHP buffer clearing that could have caused problems with loading of product's module settings - case #216
  • Fixed problem with limits set from the configurable options if the product had previously generated two sets of options - case #217


Released: Nov 13th, 2019
New Feature
  • Clients can now log in to the selected mailbox directly from their "Email Accounts" list
  • Set accessibility to specific pages in the client area from the product configuration
  • Completely rewritten code
  • Rebuilt user interface module
  • Perform bulk actions on various records in most of the client area sections
  • Added time to the mailbox "Last Login" date
  • Support for WHMCS V7.6 and previous
Bug Fix
  • Assorted code adjustments and tweak-ups


Released: Aug 5th, 2019
New Feature
  • WHMCS V7.8 support
  • Support for WHMCS V7.5 and previous
Bug Fix
  • Resolved issue with updating mailbox quota after product's upgrade/downgrade - case #138
  • Fixed problem with setting up a new mailbox password that contains certain special characters (e.g. "$" or "&") - case #140


Released: May 16th, 2019
  • Support for WHMCS V7.4 and previous
Bug Fix
  • Resolved issue with assigning a chosen "Class of Service" to the created account in the module settings - case #135
  • Fixed case that might have caused "500 error" to occur during service termination - case #136


Released: Mar 1st, 2019
New Feature
  • PHP 7.3 support
  • Support for WHMCS V7.3 and previous
Bug Fix
  • Resolved issue with mailbox features not being applied when Class Of Service was set to "Allow clients to choose Class Of Service Quota Per Account" - case #133
  • Assorted code corrections related to validations - case #132


Released: Jan 2nd, 2019
New Feature
  • Allow clients to choose multiple "Class of Service" quota per account in a single order
  • Clients are able to create mailboxes within the predefined "Class of Service" quota and their quantitative limit that has been chosen during the order
  • The validation of email addresses, e.g. distribution lists, has been updated to pass through more email formats supported by Zimbra
Bug Fix
  • Fixed issue that might have caused an error during saving a distribution list with the "Dynamic Group" option enabled
  • Minor code corrections


Released: Nov 21st, 2018
Bug Fix
  • Added verification of the "Service Details Overview" sidebar menu to eliminate the 500 web server error


Released: Jul 11th, 2018
New Feature
  • Domain Aliases - give customers the ability to add domain aliases to their main email domain
  • Added information about the minimum password length and its strength validation when creating a new email account
  • Required fields are marked with an asterisk (*) at various records creation and edition pages
  • Webmail redirection will now be opened in a new window instead of in the current
  • Added option to select all checkboxes at the email accounts list
  • If the 'Webmail Login Link' field is left empty in the configuration, it will be obtained from the server configuration
  • Minor UI tweaks and error notifications corrections in the client area
  • Slight language alterations
  • Support for an obsolete WHMCS 'five' template
  • Support for WHMCS V7.1 and previous
Bug Fix
  • It is now possible to change an email account password on the mailbox edition view
  • 'Class Of Service' options are now properly generated for configurable options when allowed to choose by clients
  • Corrected notifications about already existing email accounts or aliases
  • Corrected display of error notifications in modal windows after their closure
  • Resolved problem with product termination if all distribution lists have not been previously deleted
  • Fixed minor navigation problems with the sidebar menu
  • Adjusted display of 'Phone' field for email account creation and edition
  • Solved issue with the impossibility to terminate an account if its domain has been suspended
  • Assorted code corrections


Released: Apr 27th, 2018
New Feature
  • WHMCS V7.5 support
  • PHP 7.0, 7.1 and 7.2 support
Bug Fix
  • Resolved problem with the action of changing a password from the edit email account details view - case #62


Released: Feb 7th, 2018
  • Support for a new version of API
  • Added checkbox to filter out mailboxes that use another 'Class of Service'
Bug Fix
  • Assorted corrections related to the 'SOAP-ERROR: Encoding: Cannot find encoding' error
  • Resolved problem with displaying an invalid data format


Released: Apr 20th, 2017
Bug Fix
  • Corrected date formatting for non-default WHMCS style


Released: Jan 5th, 2017
Bug Fix
  • Display username of email account in the client area
  • Set limits of account numbers and size for services with different COS (Class of Service) under a single domain


Released: Nov 29th, 2016
New Feature
  • PHP 7 support
  • Inform administrator if system lacks required SOAP PHP library
Bug Fix
  • Corrected process of logging in to webmail from both admin and client area


Released: Oct 10th, 2016
New Feature
  • WHMCS V7 support


Released: Sep 30th, 2016
Bug Fix
  • Resolved issue affecting API authorization


Released: Sep 19th, 2016
  • Check if SOAP PHP extension is installed


Released: Mar 30th, 2016
New Feature
  • Edit email account
  • COS configurable option
  • Block email account creation upon exceeding a total capacity limit
Bug Fix
  • Handle product with unlimited resources
  • Minor fixes


Released: Aug 25th, 2015
Bug Fix
  • Saving 'Module Settings' form
  • Server selection in the product configuration
  • Connecting via SSL protocol


Released: Jul 28th, 2015
New Feature
  • WHMCS V6 support
  • Account password change


Released: Jul 2nd, 2015
New Feature
  • Completely new user interface
  • Distribution list management
  • Create account with custom settings instead of COS
  • Generate default configurable options


Released: Sep 19th, 2014
Bug Fix
  • ModulesGarden banner code displayed at the client area


Released: Aug 29th, 2014
  • Improved security and license validation


Released: Mar 19th, 2013
  • Support for WHMCS V5.2
  • Fixed incorrect images in the clientarea
  • Fixed error language problems
  • Fixed problems with wrong file requirement in the clientarea


Released: Feb 14th, 2013
  • Fixed: The module didn't work properly on Windows platform
  • Fixed: Unable to delete accounts that are not empty (contains any mailboxes)


Released: Jan 14th, 2013
  • Stable Release
Read More


  • 1 year ago
    With the Zimbra Email For WHMCS provisioning module from Modules Garden its a ease to provide our customers managed Zimbra Hosting.
    Thanks to the Modules Garden Wiki, the setup was very easy. The module works without any problems so far.
    Highly recommended!
  • 3 years ago
    I have been using this module for a long time, facilitating the administration of the Zimbra server. Installation and configuration is quite simple, so I recommend using it. Highly efficient team to help with possible problems.
  • 4 years ago
    We use the Open Source release of Zimbra ourselves and because of this plugin, it has turned out to be rather popular among our clients. Whilst it might not be that much of a money maker itself, it does a fantastic job at introducing new users to your product lineup over time. That said, it is great at building brand loyalty among your user-base.

    Regarding the features of this module, it does an excellent job at interfacing with Zimbra's API with very little required in the way of setup itself. You can get started right away.

    Christopher McGill

    [email protected]
  • 4 years ago
    Managing Zimbra is not an easy task. Controlling COS, mailbox creation, suspension and deletion is a time-consuming task when you do not have an integration with your system. With Modules Garden's Zimbra module, everything is easier. No need to access the admin panel. The user can control all accounts of his domain directly from the client area. I highly recommend this module.
  • 5 years ago
    I use a number of modules already, and with the purchase of Zimbra Email, I continue to be amazed by how easy the modules fit into my business. I really feel the difference after giving clients more options to manage their Zimbra accounts. Quick configuration is a plus as well.
  • 6 years ago
    We had a doubt if this module would work with older version of Zimbra, particularly the Community Edition. But the guys out there are Modules Garden assured things with certainty. Had been using the module for more than a year and managing around 500+ mailboxes.

    We are really happy to receive positive feedback from our customers, who praise us on the convenience and ease in managing their accounts with all necessary functionalities. Options for adding mailbox, alias and distribution lists for customers really takes out our dependency for such tasks. We are witnessing 80% customer growth over last year, simply because of this module.

    Cheers to your guys !!
Read More

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