Which action must be performed last in the email creation process for sending?

Selecting "Go Live" is the final action that must be performed in the email creation process for sending. This action signifies that the email is ready to be sent to the intended recipients. It activates the deployment of the email campaign, moving it from the preparation phase to actual delivery.

Before this step, various other tasks are essential to ensure the email is well-crafted and error-free. Designing the message, running an error check, and adding a reply-to address are all critical components that should be completed beforehand to ensure that the email is both visually appealing and functional. Once those tasks are completed, selecting "Go Live" is the necessary final action to launch the email campaign.