Hi @Kowlin, 

Thanks for sharing your question with us and welcome to the Community! Great idea for utilizing our Smart Send Time Send Time feature! 

If you want to cancel a campaign mid-send cancel a campaign mid-send, you can do so by using the Dropdown menu by the Campaign you wish to cancel and click the ‘Cancel Send’ option. It is important to note that we cannot roll back emails that have already been delivered. The cancellation action will only ensure that any further emails still queued for sending are immediately cancelled. The number of emails from your campaign that end up getting delivered will depend on how far along our sending process is when you click to cancel.

Finally, when you want to check your results, I would suggest checking out our documentation on Understanding Smart Send Time Results to gain further insight into your data!

Thanks for being a part of the Community! 

Hey @Taylor Tarpley - Is there a way to cancel the timed send test but still push out to the remaining recipient list immediately?