Developed By BlueRabbIT

Compatible with WHMCS v7.9

Stop mailing invoices yourself

Our world is becoming more and more digital but let's face it, many customers request an invoice being sent by snail mail.

This means printing out the invoice, folding it, preparing the envelope, and mailing it.

Wouldn't it be nice if someone else could take care of this for you?

This is where comes in!

About is a web based Hybrid Mail service to efficiently, economically and ecologically send letters locally and the rest of the world.

Best prices and fastest deliveries are automatically available thanks to their international printing network.

What we offer

Our module offers a seamless integration of the service in your WHMCS installation.

This allows you to send invoices to your customers in a professional manner, saving you the time and the hassle of printing and mailing the invoices yourself.

Plenty of features

  • Send invoices via, manually or automatically on creation and on late fees added
  • Automatic sending based on payment gateways and product addons
  • Manage and track your sendings from within WHMCS
  • Fully configurable
  • Includes our BestPDF Addon, which allows you to create professional looking invoices using PDF templates
  • Supports our PostFinance ISR Addon for sending swiss payment slips (CHF only)

Actively maintained

This product is actively maintained and we use it ourselves.

We are here to listen, so if you have any requests or problems, we will be happy to assist you and further improve the product.


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Version Compatibility

Compatible with WHMCS v7.9

Full Version Compatibility

  • All versions of WHMCS v7.9
  • All versions of WHMCS v7.8
  • All versions of WHMCS v7.7
  • All versions of WHMCS v7.6
  • All versions of WHMCS v7.5
  • All versions of WHMCS v7.4
  • Selected versions of WHMCS v7.3
  • All versions of WHMCS v7.2
  • All versions of WHMCS v7.1
  • All versions of WHMCS v7.0

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 BlueRabbIT


v2.1.0 Released January 20th, 2020

Latest Version

  • Made simplex/duplex print mode configurable
  • Made left/right address position configurable
  • Implemented send button on invoice edit page
  • Made storage path configurable
  • Implemented client profile setting for sending invoices on a per-customer basis
  • Fixed United States not being detected by Pingen
  • Updated Pingen API
  • Updated bundled BestPDF module to version 1.1.1


Previous Versions

v2.0.1 Released November 15th, 2019

View/hide detailed changelog

  • Fixed addon setting not always working properly
  • Updated Pingen API
  • Updated bundled BestPDF module to version 1.1.0


v2.0.0 Released November 28th, 2018

View/hide detailed changelog

  • Integration with our BestPDF module
  • Integration with our PostFinance ISR module
  • Implemented full localization to German, French and Italian
  • Added option to specify Envelope Design ID
  • Also send automatically when overdue charges are added to invoice
  • Save sent date for invoices
  • Use DataTables for table output
  • Views are now in Smarty Templates
  • Improved status display in invoices list
  • Improved dialogs and feedback messages
  • Improved sending speed handling
  • Improved configuration
  • Adaptations for new BlueRabbIT licensing server
  • Some minor bug fixes
  • Now requires at least WHMCS 7.0 and ionCube loader 10.1


See also

CleanHTML Invoice and Quote Template

CleanHTML Invoice and Quote Free template.

Account Statements Module

Send account statements to customers

Microsoft Cloud Solutions (CSP) - Office 365, Microsoft 365 and Azure added soon! - Suited for both direct and indirect CSP partners.

Office 365, Microsoft 365 and up to a 1,000 Microsoft cloud solutions, completely automated! + Azure usage added soon

GST WHMCS Module For India

As WHMCS does provide tax rules options where you can configure your GST tax but we have some extra features in our module that makes it stand out and necessary to use.

Product Description For Invoices - FREE

This module allows you to place product description on invoices