Urgent Campaign Brief

Legal approved the brief late and product wants creative by Monday. I have to share the campaign brief with [contact=Priya] in Product and [contact=Marco] in Sales so messaging and launch dates lock in, send the creative package to our agency and gather their assets, collect PR comments from Communications and consolidate them, merge research with the exec summary for leadership, and set up the bulk send workflow for regional co-op approvals. I can't tell which item will block the schedule or if anyone will push back on scope. Tell me the most likely choke point, which single action I must do first to protect the launch, and give me the exact short message to send [contact=Priya] and [contact=Marco] that creates clarity without sounding panicky. I won't change pricing or scope without product sign-off.