How do I add preheader text to my campaigns?

Preheader text is a term that is often used interchangeably with preview text.

In this article, we'll discuss:

What is preview (preheader) text?

Preview text is a snippet of text that is displayed in a contact's inbox after the subject line and is the first (or part of the first) line of text in your communication:

To customize the text displayed in the preview, you can use our preheader text editor, available with campaigns and automation emails. Providing customized preheader text will help you stand out in a contact's inbox and can help increase your open rate.

Here is an example of an email with customized preheader text:

Preheader text will not be visible within the body of the email itself; it will only appear in the contact's inbox, either next to or underneath the email's subject line.

How to add preheader text to campaigns and automation emails

The preheader text editor is available for all campaigns and automation emails that use the drag-and-drop email designer as well as custom html code. 

The preheader text editor is not available for text only emails (Emails created using the "Text Only" option under "Build from Scratch").

1. Open your campaign or automation email.

2. From the email designer, click the gear icon.

3. The Campaign Summary modal will open. Type your desired text into the preheader text field.

Note that you can use emojis in the preheader text. To add personalization to the preheader text, type the personalization tag you would like to use. 

4. Click the "Close" button on the bottom right of the Campaign Settings modal.

If you've provided preheader text using both the preheader text editor and an html content block, both will be displayed in the contact's inbox. We recommend removing html content block containing your preheader text if you wish to use the preheader text editor.

Preheader best practices

Because each device and app is different, preheader text may not always be supported (ie, some Outlook clients).

In addition, there is no character limit with creating preheader text. However, how much of the preheader text a contact will see in their inbox can depend on any of the following:

  • The device they're using to view their email inbox
  • Their email application
  • Width of their browser window (if they're accessing from a desktop computer)
  • Length of the subject line

Due to these constraints, it's best to keep the preheader text compelling, meaningful, and short (around 35-50 characters).

Click here to view preheader character counts from Litmus.

As always, we recommend testing your emails as much as possible before sending it out to your list so you can see how the preheader will look for your subscribers. You can also create split test campaigns to see which preheader text gets the most opens.

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