Facebook group data backup service.
Posts, replies, photos, videos, links.
Request the first 1000 messages of your group downloaded for free here
Just send me the URL of your group.
The backup comes with its own viewer to make reading easier. A video demo is
A variety of export formats are available including HTML, CSV, SQLite, MySQL, etc.
To enquire about Facebook group message archiving, please contact us here
Prices from $30 depending on group size.