We’re very glad to announce that our users will now be able to post full resolution native images to Facebook Groups via the Sendible social media management dashboard.
You can include your images as normal, via URL or upload, and they will be successfully posted to your Facebook Groups.
It’s good to note that, currently if you choose to include multiple images in a single post to a Facebook Group, the first image will be posted with any text that you've included and the other images will be posted in separate posts following the initial one.
To add a Facebook Group head over to:
Add/Edit Services > Social > Facebook Group