Gmail How To Edit Preheaqer Text

Is there a way to edit the preheader text when we send an email via Gmail API?
It has a standard message on preheader:
This is preheader text. Some clients will show this text as a preview.

Hi @fernandomiao, welcome to the community!

The preheader is part of the HTML payload in your email (as described here for example). So you would need to add it to the Message HTML field of the Gmail node (which is shown when you enable the HTML option).

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Thank you!