One caption is a starting point, not a strategy

The first version of a cross-poster always looks like a form with one textarea and a list of checkboxes. That is fine for a weekend project. It falls apart the first time you need a hashtag on Instagram, a shorter line on X, and a real paragraph on LinkedIn.

I kept the one textarea. That is the default. Then each connected account can override the copy. Most of the time I do not touch the overrides. When I do, it is because the network is different, not because I enjoy maintaining six drafts.

Tone shifts even when the facts do not

Tone shifts too. A dry note that works on Mastodon can read like a dunk on X. A LinkedIn post that explains the why can sound like a lecture on Bluesky. I would rather change two sentences in an override than pretend I have a brand voice engine.

This is also why I resist features that auto-rewrite your post for every platform. Sometimes they are fine. Often they invent a tone I would not hit send on. They add adjectives. They add a question at the end. They add hashtags I would not use in a room. I would rather you see the exact string that will go out.

AI in this product sits behind More options for that reason. If you want help drafting, it is there. It is not the default path, and it does not silently mutate the caption per network. The first post should still be: write, pick accounts, send.

Exceptions next to the default

If you never need overrides, you never open them. If you live in them, they are next to the default, not in a second product. I have used tools where the "advanced caption" was a different screen, a different save, and a different chance to forget which version was canonical. That is how you post the LinkedIn essay to Bluesky and spend the next hour deleting it.

The rule I use is simple. The default is what I would say if I had thirty seconds. The override is what I would say if I had three minutes and I knew who was in the room. Most posts only need the first. The ones that need the second should not require a new tab.

Cross-posting is not the art of making every network identical. It is the art of leaving at the same time without pretending the rooms are the same. One caption gets you most of the way. The exceptions are the rest of the job.