You’ll find a link to your archived campaigns by clicking on Campaigns:
Clicking this link will open a new window to your Archive Page, which gets indexed by Google:
To remove a campaign from your Archive Page, go to Options under the sent Campaign’s name under Campaigns. Then, click Remove Public Archive:
This will remove the campaign from your public archive history. It will also notify Google to no longer index the page.
No problem! You can choose whether or not to archive any campaign you send by checking or un-checking the Archive Campaign feature on the Campaign Settings page of the Campaign Builder: