# Block customers with the blacklist

The blacklist lets you stop specific customers from paying. Any transaction that comes from a blacklisted **email address**, **phone number**, or **IP address** is automatically rejected by MONEI.

## Add a blacklist rule[​](#add "Direct link to Add a blacklist rule")

1. In your [MONEI Dashboard](https://dashboard.monei.com/), go to [Settings → Blacklist](https://dashboard.monei.com/settings/blacklist).
2. Choose the identifier **type** — Email, Phone, or IP.
3. Enter the **value** to block (the email address, phone number, or IP address).
4. Optionally set an **expiration** date and time — the rule is removed automatically once it passes. Leave it empty for a permanent rule.
5. Add an optional **note** to record why you added the rule.
6. Save.

From then on, any transaction matching that identifier is declined automatically.

## How matching works[​](#matching "Direct link to How matching works")

A transaction is blocked only when it matches a blacklisted identifier exactly. If the same person pays with a different email address, phone number, or IP address, that transaction is **not** blocked — so combine the blacklist with the [Fraud Detector](https://docs.monei.com/fraud-prevention/fraud-detector-how-it-works-configuration-and-best-practices/.md) for broader, risk-based protection.

## Expire or remove rules[​](#expiration "Direct link to Expire or remove rules")

* Rules with an **expiration** date and time are removed automatically once it passes.
* **Permanent** rules (no expiration) stay until you delete them.
* To remove a rule manually, open [Settings → Blacklist](https://dashboard.monei.com/settings/blacklist) and delete it.