HubSpot’s email marketing and lead nurturing application now allows you to add images to your emails without the need to know HTML.
Including images in the body of your email can help brand your communications and complement your content and calls to action.
Please note that you should include no more than five images per email. Including more than five images greatly increases the chances that your email will get flagged as spam and will not be delivered to your intended recipient's inbox.
Use HubSpot’s HTML email template builder to place images in specific locations or create your own template using.
You can read the HubSpot help article to learn how to insert images into your emails.