This extension can be used to add a preorder form to your opencart store. The system will allow users to submit request for any of the out of stock product.
The system will show an option to fill an order request form without any advance payment. so that the user can send his/her interest to the admin and admin can contact back with details about the product.

To enable the option of preorder for any product, the product quantity must be set to 0

Tested on default theme, This extension will require customization for custom template.
For free customization contact me

Features of this vqmod extension

Change default "add to cart" button to "preorder"
Popup form for preorder
Built in captcha
sends mail to admin
option to get copy mail by user
Auto fill fields for logged In users

Preorder button visible on product page, category page, latest product and search page.

demo installation (Opencart version 2.2)
look and test @ http://www.sastewala.in/index.php?route=product/search&search=sandisk

Compatible for Opencart 2.x
No file change or replace
plag and play easy installation(upload and ready to go)

installation instruction
Must have vqmod installed
just upload the content to root or just place the file: rj_preorder.xml inside vqmod/xml folder


contact me for any help and support
Thanks
Rahul Jain
rahuljain1991@live.com