Make Campaign Invited and Attended Yes/No into All/None options
Similar to the way permissions are set up, add an all or none [All/None] functionality to the Invited and Attended columns in Campaigns for all 'guests.' It would still offer the option of checking each 'guest' individually, but sometimes (as in the case of Mailchimp lists) we could do a quick check of the All box, then remove only those persons whose email, for whatever reason, did not successfully send. Since these lists are often very long and must originate through campaigns to sync, this would be a much better and more efficient option than one by one checkboxes.
Jesika Ellis commented
Here to agitate for this again!