The recommended way to set both the front image and the message is to send a complete creative with
creative_id — see Send a Creative. The options below set the image per request instead.Front Image
For postcards, notecards, magnacards, and giftcards, this will be used for the front of the mailer. For windowed and windowless letters this will be used for the background of the cover letter. The front image can be specified in two different ways:- Using
front_image_urla URL can be specified to an png or jpeg image. - Using
image_templatea template ID can be specified to use a pre-designed thanks.io image template for the mailer.
Back/Interior Image
- Using
custom_background_imagea URL can be specified to an png or jpeg image. This will be used for the back of postcards/magnacards or the interior of notecards. This is not used for giftcards or letters.