How this free TikTok scheduler works
Drop a video, draft a caption with a 2,200-character counter, pick privacy / interaction settings, choose direct post vs upload-to-inbox, disclose branded content if applicable, and set a publish time. The fields mirror the TikTok Direct Post / Inbox upload payloads Postmixr uses.
TikTok caption character limit
TikTok captions allow up to 2,200 characters. Short, searchable copy with one or two hashtags usually outperforms long captions on the FYP.
Brand disclosure and posting method
When you check "Disclose branded content," TikTok requires you to set brand_organic_toggle (your own brand) and/or brand_content_toggle (paid partnership). Direct post requires an audited TikTok app — upload to inbox always works and lets you finalize inside the TikTok app.