What testing mechanism allows Yasmin to verify her email send looks correct?

To verify that an email send looks correct, using Test Send is an effective method. A Test Send allows Yasmin to send the email to a specific address or group of addresses for review before the actual campaign is launched. This testing mechanism ensures that she can see the email as it will appear in the inbox of the recipients, which is crucial for checking formatting, links, and overall presentation.

In contrast, Subscriber Preview is a tool that lets users view how the email will look for a specific subscriber, but it does not send an email. This tool is helpful for personalization features and dynamic content but doesn't confirm how the email renders in an actual inbox environment. A/B Testing, on the other hand, is used for testing different versions of emails for better performance but is not designed to verify the appearance of an email prior to sending it out. Each of these tools serves a specific purpose, but for the specific context of checking email's visual correctness, Test Send is the most appropriate choice.