The option to send out a manual digest is primarily for testing purposes. Staff administrators can send a copy of the automatic digest to just the staff group and see if the digest includes all the content that has been recently added. In addition, the Send Manual Digest is an effective means to send out collective content to new members who may have not received the weekly digest because they had not yet registered on the site. For example, you may add a lot of content 3 weeks ago, and then in the past week after a marketing push, you notice an increase of new members registering on the site. You can then determine if you would like to send out weekly updates, but also force a manual digest to go out with content from the past month. This would send a digest with all the content that was added over the last month, thereby getting those new registrars “up to speed”.