---
title: "Opt-out Methods"
slug: "opt-out-methods"
updated: 2024-02-26T12:55:57Z
published: 2024-02-26T12:55:57Z
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.mapp.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Opt-out Methods

Maintaining an accurate and secure database of contacts is essential for effective digital marketing. Our system provides numerous opt-out methods to ensure that you meet customer expectations. You can see below how each method affects the data.

## Blacklists

|  | Group Blacklist | System Blacklist | Robinson List |
| --- | --- | --- | --- |
| **Statistics History** | Previous statistics are retained. No new statistics are recorded from this group. | Previous statistics are retained. No new statistics recorded. | Previous statistics are retained. No new statistics recorded. |
| **Event History in Specific Group** | Permanently removed from system No new statistics are recorded for this group. | Permanently removed from system. | Remains in the system. |
| **Event History in System** | Remains in the system. | Permanently removed from system. | Remains in the system. |
| **Existence in Group** | Removed from group and cannot be reimported into this group. | Removed from the system and cannot be reimported. | Remains in the group. Skipped during sendout. |
| **Existence in System** | Remains in the system. | Removed. | Remains in the system. Skipped during sendout. |
| **Is the action reversible?** | Once the contact is removed from the group blacklist, they can resubscribe to the group as a new member. However, previously deleted group data cannot be recovered. | Once the contact is removed from the group blacklist, they can resubscribe to the group as a new member. However, previously deleted group data cannot be recovered. | If the email address, mobile number, or domain is removed from the Robinson list, the system can contact it once more. A Robinson list normally applies to all groups in the system. However, you can turn the list on or off for specific sendout groups. |

## Deactivation

|  | Deactivation in Group | System-Wide Deactivation |
| --- | --- | --- |
| **Statistics History** | Previous statistics are retained. No new statistics are recorded from this group. | Previous statistics retained. No new statistics recorded. |
| **Event History in Specific Group** | Remains in the system. | Remains in the system. |
| **Event History in System** | Remains in the system. | Remains in the system. |
| **Existence in Group** | Remains in the group. Contact is skipped during sendout to the group. | Remains in the system. |
| **Existence in System** | Remains in the system. | Remains in the system. |
| **Is the action reversible?** | The contact can be reactivated from the user interface. | The contact can be reactivated from the user interface. |

## Unsubscription

|  | Unsubscribe from a Specific Group | Unsubscribe from All Groups (Automation) |
| --- | --- | --- |
| **Statistics History** | Previous statistics are retained. No new statistics are recorded from this group. | Previous statistics retained. No new statistics recorded. |
| **Event History in Specific Group** | Remains in the system. | Remains in the system. |
| **Event History in System** | Remains in the system. | Remains in the system. |
| **Existence in Group** | Removed from the group. | Removed from the group. |
| **Existence in System** | Remains in the system. Assigned ​Bounced​ status in the specific group. | Remains in the system. Assigned ​Bounced​ status in all groups |
| **Is the action reversible?** | The contact can resubscribe or be added to the group. | The contact can resubscribe or be added to the groups. |

## Removal and Deletion​

|  | Removal from a Specific Group | Removal or Deletion from a System |
| --- | --- | --- |
| **Statistics History** | Previous statistics are retained. No new statistics are recorded from this group. | Previous statistics retained. No new statistics recorded. |
| **Event History in Specific Group** | Removed from system. | Removed from system. |
| **Event History in System** | Removed from system. | Removed from system. |
| **Existence in Group** | Removed from group. | Removed from system. |
| **Existence in System** | Remains in system. | Removed from system. |
| **Is the action reversible?** | The contact can resubscribe or be added to the group. | The contact can be added to system as a new contact. |

## Anonymization

|  | Anonymization |
| --- | --- |
| **Statistics History** | Previous statistics are retained. No new statistics recorded. |
| **Event History in Specific Group** | Removed from system. |
| **Event History in System** | Removed from system. |
| **Existence in Group** | Removed from system. |
| **Existence in System** | Removed from system. |
| **Is the action reversible?** | Data can no longer be associated with a specific contact. The conversion is irreversible. |