You do have the ability to add a preheader to your Marketing Emails but it’s not entirely clear. Luckily we will run through adding a preheader in this blog post.
In order to add a preheader you need to ensure you have text in the first section of your email and if you are using a section with multiple columns then the text needs to be in the first column (furthest left).

When you send your email the text from your top section will be added as the preheader. It is worth noting that email providers will only show a certain number of characters in their preheaders.

If you don’t want the text visible in your email then you can start the email with one column, add the text to the top of the column, make it as small as possible then change the colour to the same as the background.

After changing my text to the same colour as the background the email comes through to outlook with the preheader but no text on the actual email.

Alternatively you can add the code below to the HTML and this will remove the section that contains the preheader text entirely.
<div style=”display: none”>
Testing preheader for marketing emails in Dynmaics 365 for Marketing
</div>

Both methods will add preheader text and remove the text from the email but using HTML will make the section completely disappear and move everything below it to the top of the page.

