emailing content after payment

Hello,

I am new in OpenCart. I have already liked it for its easier structure and simplicity.
I need to do something in particular for my cart. it is like this,

My customers will buy numbers [ like recharge card secret number ] from me.
- So as soon as they pay is it possible to email the number to them automatically ? can I have some functions somewhere to gather the next number from database and send it to my customers email ?
- Or should I make the number available in download section ? it will be a problem as i have to add so many same products with different download files attached.

I am in some trouble. So any help will be highly appreciated.

Thanks
Nazmus Sakib

Current product downloads may not work or not ideal as you already know.

Ideally there should be another module or program working with opencart to deliver the next number details. Yes Its possible to develop something like that.

thanks for ur response @ kedgetech.

Could you or anyone please suggest a module if such module exists.
Or
If i have to add / change codes where should i change ? I think my custom function should be called at the time when the system returns back to the site right after payment.

I need another help - how can I automatically disable [ will not appear in store ] a product if it's quantity reaches 0 ?
any help will be highly appreciated.

I have not seen one.

opsakib wrote:I need another help - how can I automatically disable [ will not appear in store ] a product if it's quantity reaches 0 ? any help will be highly appreciated.

Its possible to disable the product once it reaches the zero mark. You might need to add a minor custom code to achieve this. You should be able to use exisitng methods in open cart for product disabling.
Ideally it would be benificial if you develop that as a module incase you dont want the custom code to execute at any point.