Developed By WHMCS

Compatible with WHMCS v8.10

We take the hassle out of switching billing platforms with WHMCS ImportAssist.

With WHMCS ImportAssist, you can import your data from a range of web based billing applications as well as migrating data from one WHMCS installation to another, allowing you to combine multiple installations into one.

Through a simple wizard based process, WHMCS ImportAssist will guide you through the process of preparing for and migrating data to the WHMCS platform.

Supported Scripts & Versions

WHMCS ImportAssist supports importing data from the following applications and versions:

  • WHMCS Versions 6.2.x, 6.3.x, 7.x and 8.0
  • Blesta Versions 2.x, 3.x, 4.1, 5.x
  • ClientExec Versions 5.3, 5.4, 5.5, 5.6, 5.7, 5.8, 5.9, 6.x
  • HostBill Versions 2016 and later

While performing imports from versions of the software outside of those listed above may be possible, it is unsupported.


ImportAssist is available free of charge to all WHMCS license holders.

Simply click the Get it Now button above to download and get started.

Help & Support

Further information is available in the ImportAssist documentation:

And as always, if you have any questions our technical support team can be reached at



5 stars
4 stars
3 stars
2 stars
1 star

Esthétique @esthtique4327

June 5, 2024 at 08:15:27 AM

No comment provided.

  • 1 month ago

Niki Jacob @niki5509

April 18, 2024 at 01:59:06 AM

its been running 2x for 3 hours. it makes pretty dots. thats it. i have 15 clients. it should not take more than 20m

  • 3 months ago

Customer Dan @dan4998

July 10, 2023 at 03:32:28 PM

No comment provided.

  • 1 year ago
  • Version Number 1.2.3

Muhammad @muhammad9113

June 28, 2023 at 07:17:05 AM

Great addon but we cannot select what to import? I don't want to import everything. I need a an option to select. Only a selected items like users, products, pricing, etc. I don't want to import old unused addon and its files and database.


  • 1 year ago
  • Version Number 1.2.3

GreenITSolution @greenitsolution6878

March 15, 2023 at 02:16:35 AM

There should be user choice option that what they want to import. Example, I just want to import the clients, client domains & services.

  • 1 year ago
  • Version Number 1.2.3

Francesco Gruner @francesco3510

November 8, 2022 at 09:21:53 PM

Hi, is it incompatible with php8 version?
as soon as I load the files on / addon / and go to the setup page in whmcs, it gives me an "oops" error

John Kipling @WHMCS-John

February 22, 2023 at 03:28:01 PM

Hi Francesco,
We have published v1.2.3 which adds compatibility with PHP 8.1.

Please download the latest version and give it a try!

WHMCS Staff Member  
  • 1 year ago
  • Version Number 1.2.2

David @david5896

June 29, 2020 at 02:33:49 PM

Does not work - downloaded unzipped - now have files and folder - you cannot upload folders via filemanager in Cpanel!
Uploaded Zip extracted to folder - WHMCS does not see any Import Assist addon
Deleted - Why there is not a client import already in WHMCS is ridiculous!

John Kipling @WHMCS-John

August 25, 2020 at 04:19:01 PM (Edited)

Hi David,
I'm sorry to hear you experienced trouble installing ImportAssist. It sounds like the files may not have been positioned quite right; they should end up at /modules/addons/import_assist/ in accordance with the installation instructions:

Once the files are in the correct directory ImportAssist will appear on the Setup > Addon Modules page immediately.
Please open a ticket with our Support team so we can provide further assistance:

WHMCS Staff Member  
  • 4 years ago
  • Version Number 1.1.5

Maria Vanna @maria7015

February 26, 2020 at 09:56:02 AM

Nice tool! Free, and very easy to configure!

  • 4 years ago
  • Version Number 1.1.5

hamyar mag @hamyar4185

June 12, 2019 at 07:53:56 AM


  • 5 years ago
  • Version Number 1.1.4

Server Admin @ssdway914

June 5, 2019 at 03:16:38 PM

I will say it is the best of it's kind. You won't get a better assistant.

  • 5 years ago
  • Version Number 1.1.4

mizban fa @alcvb8662

May 17, 2019 at 09:47:38 AM


  • 5 years ago
  • Version Number 1.1.4

mar lim @marlim

January 18, 2019 at 08:40:10 AM

nice like this veryy likeee

  • 5 years ago
  • Version Number 1.1.0

peter patel @peter5696

November 23, 2018 at 08:36:02 AM

Not sure if its because the version of Whmc i am using is too old or not, doesnt seem to be able to import domain names

John Kipling @WHMCS-John

February 20, 2020 at 04:59:40 PM

Hi Peter,
Thanks for your review. I'm pleased to announce that we have released v1.1.5 of ImportAssist which will now import domain names.

WHMCS Staff Member  
  • 5 years ago
  • Version Number 1.1.0

MAPPUS Sébastien @mappus5804

May 23, 2018 at 11:53:51 PM

Today I put a rating of 5 stars because this module works almost perfectly.

Some defects such as the import of domain names, and some problems for customers, I have to refresh the page several times, but it to work in the final.

I use WHMCS 7.5.1 on PHP 7.2, hope it will have an update that will allow me to import domains.

Thank you

John Kipling @WHMCS-John

February 20, 2020 at 04:58:59 PM

Hi there,
Thanks for your review. I'm pleased to announce that we have released v1.1.5 of ImportAssist which will now import domain names.

WHMCS Staff Member  
  • 6 years ago
  • Version Number 1.1.0

K.M. Badrul Alam @badrul9635

August 30, 2017 at 12:23:35 PM

All went fine. Thanks WHMCS
Edit, Email History, Affiliate sign ups, Order Number and many things are missing after import.

John Kipling @WHMCS-John

February 9, 2018 at 12:23:05 AM

Hi Badrul,
Thanks for your review. I'm sorry if this caught you unawares. For a full list of what will be imported, please refer to:

WHMCS Staff Member  
  • 6 years ago
  • Version Number 1.0.5
  • Edited

Hendra Setyawan @Wpfastest

January 27, 2017 at 01:16:57 PM

Not working for blesta 3.6 & blesta 4

John Kipling @WHMCS-John

January 29, 2017 at 04:48:33 AM (Edited)

Hi Hendra,
Blesta 4 is not currently listed as one of the supported scripts which ImportAssist can import.
However Blesta 3.x is supported and I am not aware of any problems with version 3.6 specifically. Please open a support ticket so we can investigate:

I'm pleased to advise support for Blesta 4 has now been added!

WHMCS Staff Member  
  • 7 years ago
  • Version Number 1.0.4
  • Edited

Version Compatibility

Compatible with WHMCS v8.10

Full Version Compatibility

  • Selected versions of WHMCS v8.10
  • Selected versions of WHMCS v8.9
  • Selected versions of WHMCS v8.8
  • All versions of WHMCS v8.7
  • All versions of WHMCS v8.6
  • All versions of WHMCS v8.5
  • All versions of WHMCS v8.4
  • All versions of WHMCS v8.3

System Requirements

  • PHP 7.2, 7.3, 7.4, or 8.1

* Requirements listed are in addition to the WHMCS default system requirements.

Support for this product

The best place to start if you need help with a specific product is to contact the developer. All WHMCS Marketplace developers have both a website and support URL listed.

Developed By WHMCS


v1.3.0 Released February 12th, 2024

Latest Version

IMPORT-5989 - Implement support for Blesta v5.x


Previous Versions

v1.2.3 Released February 21st, 2023

View/hide detailed changelog

  • IMPORT-5955 - Import domains from ClientExec 5.5+
  • IMPORT-5971 - Covert daily to monthly billing cycles from Blesta4
  • IMPORT-5974 - Assign default payment gateway if one is not provided from HostBill
  • IMPORT-5977 - Optimize query for importing invoice items
  • IMPORT-5978 - Correct currency client assignment
  • IMPORT-5981 - Correct import of legacy bank details
  • IMPORT-5982 - Correct import of bank paymethods
  • IMPORT-5987 - Correct SQL query for Blesta3
  • IMPORT-5988 - Allow import of "Transferred Away" domains
  • IMPORT-5991 - Create new owner if user has become orphaned
  • IMPORT-5993 - Allow import of 3yr billing cycles for ClientExec
  • IMPORT-5994 - Allow import of client without gateway from ClientExec
  • IMPORT-5995 - Skip payment import from ClientExec if not used
  • IMPORT-5997 - Ensure IDs are properly unique when entities do not exist in source
  • IMPORT-6002 - Support for PHP 8.1

Note: This addon must be installed in WHMCS v8.3 or greater, however it can still import from older version of WHMCS


v1.2.2 Released September 8th, 2021

View/hide detailed changelog

  • IMPORT-5990 - Correct fatal error during ClientExec User import


v1.2.1 Released October 2nd, 2020

View/hide detailed changelog

  • IMPORT-5983 - Add Version 8.0 compatibility


v1.1.5 Released February 20th, 2020

View/hide detailed changelog

  • IMPORT-5973 - Add support for WHMCS 7.8
  • IMPORT-5975 - Resolve issue affecting domain importing


v1.1.4 Released February 7th, 2019

View/hide detailed changelog

  • IMPORT-5969 - Correct Server Importing. Add Gateway Reference.


v1.1.3 Released August 2nd, 2018

View/hide detailed changelog

  • IMPORT-5965 - Add GatewayId Migration to ClientExec 55+
  • IMPORT-5966 - Update Font Awesome Icons
  • IMPORT-5967 - Ensure UserId is Migrated with Client Exec for Transactions


v1.1.2 Released June 6th, 2018

View/hide detailed changelog

  • IMPORT-5961 - Enable Using Same IDs for Empty Destinations


v1.1.1 Released May 28th, 2019

View/hide detailed changelog

  • IMPORT-5958 - Fix bug with certain database passwords
  • IMPORT-5959 - Prevent warnings when performing data re-encryption


v1.1.0 Released January 25th, 2018

View/hide detailed changelog

  • [IMPORT-5946] - Fix address import from Clientexec
  • [IMPORT-5947] - Fix bug causing some tickets to not be imported from Blesta 3.4
  • [IMPORT-5948] - Fix bug causing transaction amounts to be lost when importing from Blesta 3.x
  • [IMPORT-5949] - Fix bug affecting ticket import in Blesta 3.4
  • [IMPORT-5950] - Fix bug affecting contact import from Blesta 3.x
  • [IMPORT-5953] - Fix bug affecting import of TLDs and TLD pricing in ClientExec 5.5.4
  • [IMPORT-5954] - Provide more accurate version compatibility indication for Clientexec importers
  • [IMPORT-5956] - Update ImportAssist version number to v1.1
  • [IMPORT-5945] - Add support for importing data from Blesta 4.x


v1.0.5 Released January 30th, 2017

View/hide detailed changelog

  • IMPORT-5943 - Fix missing class error when importing from ClientExec
  • IMPORT-5944 - Fix compatibility issue in Blowfish encryption/decryption routine


v1.0.4 Released October 15th, 2016

View/hide detailed changelog

  • IMPORT-5940 - Prevent invoices from generating for orphaned invoice items post import


v1.0.3 Released October 14th, 2016

View/hide detailed changelog

  • Compatibility update for PHP 7


v1.0.2 Released October 10th, 2016

View/hide detailed changelog

  • IMPORT-5939 - Correct Mapper Not Retrieving All Mapped Rows
  • IMPORT-5937 - Correct Transaction Fee map in WHMCS Source


v1.0.1 Released September 5th, 2016

View/hide detailed changelog

  • IMPORT-5936 - Hostbill: Fix column error when importing Clients Add-ons


v1.0 Released August 23rd, 2016

View/hide detailed changelog

  • Initial release


See also

Account Synchronization For WHMCS

Import/export and synchronize accounts of external servers with your WHMCS automatically.