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# Block disposable email addresses

## Overview

Stop people from using throwaway emails to abuse your promotions or place fraudulent orders. Disposable (temporary) email addresses from services such as 10minutemail or mailinator are rarely used by real customers. **Block disposable email addresses** compares the email a visitor enters with Blockify's list of known disposable email services, which we keep up to date for you. There are two switches: one for **Checkout** (**Block Checkout > Quick Setup**) and one for **Subscribe forms** (**Settings > Risk Mitigator**).

## What you'll learn

* [How to block disposable emails at checkout?](#2-how-to-block-disposable-emails-at-checkout)
* [How to block disposable emails on subscribe forms?](#2-how-to-block-disposable-emails-on-subscribe-forms)
* [How it works?](#2-how-it-works)
* [Who can use this feature?](#2-who-can-use-this-feature)

## How to block disposable emails at checkout?

### Step 1: Open Quick Setup

Go to **Block Checkout** and find the **Quick Setup** section at the top of the page.

### Step 2: Tick the checkbox

Tick **Block checkout from disposable or temporary email addresses**. The setting applies immediately.

![](https://storage.crisp.chat/users/helpdesk/website/-/8/3/8/3/8383e5404a31c000/screenshot-2026-06-08-at-08551_1xdlfcj.png)

A shopper who enters a disposable email at checkout sees the **Error message** configured under **Quick Setup** — by default "Order cannot be placed due to suspected fraud." — and the order is not created. Edit that field to match your store's tone of voice.

## How to block disposable emails on subscribe forms?

### Step 1: Open Risk Mitigator

Go to **Settings > Risk Mitigator**.

![](https://storage.crisp.chat/users/helpdesk/website/-/8/3/8/3/8383e5404a31c000/settings-01-risk-mitigator-tab_18c4jlm.png)

### Step 2: Turn the switch on

Find **Block disposable email addresses on subscribe forms** and toggle it to **On**. Visitors using a disposable provider will not be able to submit your newsletter form.

![](https://storage.crisp.chat/users/helpdesk/website/-/8/3/8/3/8383e5404a31c000/screenshot-2026-06-08-at-08462_1s2sesk.png)

## How it works?

| Switch | Where | What is blocked | Message shown |
| ---- |
| **Block checkout from disposable or temporary email addresses** | **Block Checkout > Quick Setup** | Completing a checkout with a disposable email | The Quick Setup **Error message** |
| **Block disposable email addresses on subscribe forms** | **Settings > Risk Mitigator** | Submitting your newsletter signup form with a disposable email | The visitor can't send the form |

Blockify only looks at the **domain** of the address (the part after `@`) and compares it with the disposable list. It does not check whether the mailbox really exists:

* `someone@10minutemail.com` → blocked, whether or not the address is real.
* `someone@gmail.com` → not blocked, even if the address does not exist.

| Blockify only checks new checkouts and new form submissions. Existing customers and subscribers are not affected.

## Who can use this feature?

* **Checkout** switch: available on the **Shopify Plus** plan.
* **Subscribe forms** switch: available on the **Plus** and **Enterprise** plans.

## FAQs

1. **Can I add my own domains to the list?**
Not from this switch. To block a specific domain at checkout, create a **Block checkout fields** rule with the **Email** condition and enter the domain as a word (for example `tempmail`). See [Block checkout by email, phone, name, address or customer tag](https://help.omegatheme.com/en/article/block-checkout-by-email-phone-name-address-or-customer-tag-ohvyq8/).

2. **Can I allow one disposable domain that my customers use?**
No. You can't edit the list. Turn the switch off if it blocks addresses you want to accept.

3. **Will existing subscribers be removed?**
No. The subscribe-form switch only stops new sign-ups.