> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.reach-book.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Unsubscribes and the do-not-contact list

1. [Mailboxes](/reach-book.com-docs/mailboxes)

# Unsubscribes and the do-not-contact list

## Unsubscribes

Every campaign email includes an opt-out line and a one-click unsubscribe link. When someone unsubscribes:

* Their address is blocked across the whole workspace, for every campaign and every member.
* Removing them from the do-not-contact list does **not** let you email them again. Their opt-out stays.

You can also mark a reply as **Unsubscribe** in the Inbox to block the address.

## Do-not-contact list

Managers and administrators open **Workspace settings → Do not contact**.

* Add an email address to block one person.
* Add a bare domain (for example `example.com`) to block a whole company.
* Add an optional reason.
* Paste many entries at once, one per line.

Sending and mailbox drafts are blocked for everything on the list.