Preview and test

Preview shows your message exactly as one real customer receives it, with personalization resolved. Use it to catch problems before launch, then send a test to check how the message looks on a real device.

Preview a message

Open the message to see its preview. Preview impersonates one real customer, so names, products, and other personalization show real values instead of placeholders. There's a toggle at the top-left corner of the preview that lets you switch between desktop and mobile to check both.

Choose the right customer to preview

Marketing agent previews the message on a customer it estimates will get the campaign. That estimate can miss, and then dynamic content might look empty or broken. When that happens, ask Marketing agent to preview on a specific type of customer:

Preview this on a customer who recently abandoned a cart.

Preview content variants

A message can contain content variants, such as several subject lines or hero images. At send time, each customer gets the variant selected for them. In preview, you can see every variant of the message for the customer you're previewing. See Content variants.

Send a test

Send a test email or SMS from preview to check delivery and layout on a real device.

If preview shows an error

Preview shows 2 kinds of errors:

• Abort. Marketing agent adds safety conditions that stop the message for a customer when data or a personalization value is missing. That customer gets no message instead of a broken one, and preview shows an abort message.
• Personalization code error. The personalization code itself fails. Marketing agent tests the code on sample customers before you launch, but it can miss an edge case.

For either error, Marketing agent offers to investigate and suggest a fix. For common causes, see Troubleshoot content issues.