Problem
The problem with one caption everywhere
One caption pasted to every network misses the differences in length, titles, and tags. The Send keeps one media file and writes the text per network. Hashtags, titles, and the first line can differ.
Checked 2026-10-29.
How
How it works
You upload once. The Send then writes a separate caption for each network on that post. In the app, that shows up as writing unique captions after the upload. The public API docs say the same thing: unique titles, captions, and hashtags run per network when copy is enabled.
Limits
Limits per network
The cells below are the official text limits from each network page. A blank cell means that page did not state a caption limit. Checked 2026-10-29.
Edit
Editing before send
You can change the text before you send. On the API, PATCH /api/v1/posts/:id edits the title and the text. See the API docs and the API posting guide.