Values from a mapped column (source column) will be merged as embedded images.
Embedded images are part of the message itself. See comparison between embedded and linked images.
LIMITATION: You can merge only images from Google Drive as embedded images. If you want to merge remote images you can use Linked Image option instead.
KEEP IN MIND: Values in the mapped column (source column) must be links to images in Google Drive. You cannot merge external images.
You can make images clickable and provide a link where it should take users after they clink on an image.
get link from a column
Each merged image from the selected column will be pointing to a link you provide in the link source column. This way you can merge an image which points to a different URL for each recipient.
All merged images from the selected column will be pointing to the same link you provide.