The slowest part of agency work is rarely the work. It's the back-and-forth with the client. Screenshots in Slack, a spreadsheet of captions, eight email threads with the same subject line. Client review batches put a private link in front of the people who need to sign off, and the round-trip becomes a tracked object instead of a chase.
Pick the posts. Invite reviewers by email. Set the policy (any one approves, or all must agree). Send. The client opens the link, scrolls the list, and decides post by post: approve, request changes, comment, attach a markup. Every decision lands back on the post itself with a version stamp.
The review link reads from the same workspace as the calendar and the composer, so the post the client sees is the post you scheduled. Same native preview, same media, same scheduled time. Pair it with the broader approval workflow if your team needs to sign off first, or run it inside a client workspace on the agency plan.