# Cross-posting and per-channel copy

> Send one post to every channel, or rewrite it for one audience without breaking the rest.

Pick several channels in the account row and they all get the same post. Each one's copy is checked against its own
network's limits, so you'll see straight away if the X version is too long.

## Synced and unsynced channels

Every channel except the primary has a **Sync with** switch under its copy.

- **On (synced)**: the channel copies the primary's text and media. Edit the primary and it follows.
- **Off (unsynced)**: the channel keeps its own words and media. Changes to the primary no longer reach it.

Unsync a channel when its audience needs something different: a longer LinkedIn post beside a short X one, a
different image on Instagram, or a Discord message that tags a role.

Turn the switch back on to make the channel copy the primary again. If its copy has changed, you're asked to confirm
first, because its own text is replaced by the primary's.

## Separate times per channel

A post can go out at a different time on each channel. In the schedule dialog, choose
**Choose when to publish on each platform**. Each time is its own entry on the calendar, and each channel can be
moved or unscheduled on its own afterwards.

## When one channel fails

If one channel refuses a post and the rest publish, the failed channel is split off into its own draft, with the
network's reason, so you can fix it and publish it without touching the ones that went out. See
[When a post fails](https://orbitwrite.com/docs/guides/troubleshooting/publishing-failures).

## Things that differ by network

Some things can't be cross-posted as-is, and the composer tells you before you schedule:

- **Threads** exist on X, Bluesky, Mastodon and Threads. On a synced channel anywhere else, the thread's posts are
  joined into one post, separated by blank lines, and you'll see that in its preview.
- **Media requirements** differ. Instagram, TikTok, YouTube and Pinterest need media; YouTube needs a video. Check
  [Platforms](https://orbitwrite.com/docs/platforms) for each network's limits.
- **Mentions** are per network: `@jamie` on X may be someone else on Bluesky. Pick mentions from the suggestions as
  you type `@`, and check each unsynced channel's copy names the right account on that network. A mention with no
  handle on a network is published as the plain name, without the `@`.