Should the photo notification setting be separate from the albumI'll go with your gut. Also for File folders.
Also, I forgot database notifications, which don't exist anywhereI concur with others' comments: both row and table.
My thinking with aggregation is that when an email notification isI still have concerns about timeliness, but maybe it isn't such a big deal that I should worry about first-one-out delay.
But it suddenly occurs to me that moderator notices (such as member/message approval) should not be aggregated, under any scheme.
And since every exception deserves an exception perhaps retain the one for Direct Add: only one notice need be generated (to the other moderators), not a "member joined" per address.
Or maybe "member joined" generally. Acceptance of an invitations if a mod sent out hundreds, or other mass-marketing of the group, could cause a flood. None of the rest seem like they should plausibly need aggregation.