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Marketing Cloud Next
Set Up a Sandbox Blackhole for Email

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Set Up a Sandbox Blackhole for Email

When you test email in a sandbox, a blackhole prevents the accidental sending of test messages to real customer email addresses. Use a blackhole to test high-volume email sends, flow executions, or complex, multichannel campaign builds without consuming message credits.

Required Editions

View supported editions.

User Permissions Needed
To create a sandbox:

Manage Dev Sandboxes (Developer or Developer Pro only)

OR

Manage Sandboxes (all sandbox types)
To deploy Data 360 objects: Data Cloud Architect

Enable Blackhole in a full or partial sandbox, and then add exceptions for domains that need to receive test emails.

  1. Log in to a sandbox org that includes Marketing Cloud Next.
  2. From Setup, in the Quick Find box, enter Blackhole, and then select Sandbox Blackhole.
  3. Turn on Blackhole.
    It takes about 10 minutes for the changes to take effect.
  4. (Optional) In the Add Allowed Email Domains section, add up to five email domains that can receive test emails. For example, if you add example.org, a sandbox email sent to any address with the example.org domain can reach the recipient.
Note
Note Blackhole doesn’t suppress sends from the Preview and Test window of the email editor or the Debug Flow window of Flow Builder.
 
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