Can I unsend an email in Zendesk?
No, it is not natively possible to delete a comment from a ticket or unsend an email from Zendesk. However, you can consider marking the comment as internal or using the Ticket Redaction app, to remove the comment from future ticket updates.
The Ticket Redaction app will be discontinued on January 10, 2024, and is no longer available to download from Zendesk Marketplace. Replacement capabilities are now available natively in Zendesk within the Agent Workspace interface. For more information, see the announcement: Announcing the discontinuation of select Built-By-Zendesk apps
The Agent Workspace interface has a native ticket redaction feature which you can use to remove sensitive data from comments. For more information, see the article: Redacting ticket content.