> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.tyslo.com/sitemap.xml
> Use this file to discover available pages before exploring further.
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# How to limit the availability of Cash on Delivery to certain postal codes that you serve?

**You can limit the availability of Cash on Delivery to specific postal codes, EasySell order form will only accept allowed postal codes, follow the steps bellow to do that.**

### Limit where Cash on Delivery is available
* Go to **Settings**
* Then click on the **Fraud Protection** tab
* Scroll down to **Exclude postal codes** section
* Check the **Limit where Cash on Delivery is available by postal code** field
* Now the configuration section is shown, you have two options to choose from: **1- Allow orders from the following postal codes (Whitelist)**, OR **2- Do not allow orders from the following postal codes (Blacklist)**
* The final step is to upload a text file containing your postal codes based on the option you have chosen.

![](https://storage.crisp.chat/users/helpdesk/website/4b154ca9ad47c000/cleanshot-2025-03-08-at-233351_13rsc7o.png)
### File format
Create a text file ( **.txt**) with your postal codes separated by new line, here is an example:

![Tyslo EasySell - Postal codes example](https://storage.crisp.chat/users/helpdesk/website/4b154ca9ad47c000/tyslo-easysell-postal-codes-ex_8bifow.png)

||| The file size must not exceed 512 KB.

| ℹ️ If need any further information or you need any kind of help, please do not hesitate to contact us via chat or WhatsApp from the app 😎