If you have ever run one brand on two platforms, you know the ritual: write the post, schedule it on X, open another tab, paste it, trim it, schedule it again on LinkedIn. Multiply by the number of brands you run and the ritual becomes the job.
The one-post-per-slot assumption
Most scheduling tools model a queue as a list of time slots, each holding exactly one post. Under that model, cross-posting is impossible to express: the 5:30pm slot is either the X post or the LinkedIn post, never both. So the tools bolt on duplication, and you end up managing copies.
A slot is a lane per platform
Postrim models every time slot as one lane per connected platform. A post that targets X and LinkedIn fills both lanes of its slot with a single write. A post that targets only X fills one lane and leaves the LinkedIn lane open for something else at the same time.
- One write can publish to every platform the brand posts on.
- A platform-specific post never blocks the other platforms out of its slot.
- The queue shows which lanes each slot has filled, so gaps are visible at a glance.
“Reading a slot as a single post is what made cross-posting impossible: the queue offered X only or LinkedIn only, never both.”
Targeting stays per post
By default a post goes everywhere its brand posts. When something belongs on one platform, you narrow the target on that post alone, and autopilot respects the same lanes when it fills quiet weeks. No duplicated drafts, no second tab.
Postrim is free for three accounts. Connect a brand and try a cross-posted slot this week.
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