Yes, posts on X can be scheduled, threads included.
The part worth understanding isn’t whether you can. It’s why X scheduling is priced differently from every other platform in almost every tool you’ll look at.
What X accepts
Through BulkPublish:
| Post length | 280 characters |
| Images | Up to 4, 5 MB each, JPG, PNG, GIF or WebP |
| Video | Up to 512 MB and 140 seconds, MP4 or MOV |
| Threads | Supported |
The 140-second video limit is the one that catches cross-posters. The file size allowance is generous at 512 MB, but the duration cap is short, so a clip fine for YouTube or Tumblr gets rejected here on length.
Why X costs more
X charges for API access in a way most platforms don’t. Every post published through the API has a real cost to whoever runs the tool.
That’s why you’ll see X handled differently across the whole category: separate pricing tiers, credit systems, or exclusion from cheaper plans. It isn’t tools being difficult, it’s a cost that either gets passed on or absorbed quietly.
In BulkPublish, X publishing on the free plan runs on pay-as-you-go credits, and paid plans include a monthly X budget that covers publishing. Worth knowing when comparing plans, because a headline channel count won’t tell you.
Threads on X
At 280 characters, threading is often the only way to make a full point.
Two rules that don’t change:
The first post has to work alone. It’s the one that gets shown, and a first post that only works as a preamble loses most readers.
Don’t thread by default. Two posts that fit in one are worse than the one.
When scheduling a thread, each post is counted separately against the character limit, so nothing gets truncated mid-thread.
Scheduling one
- Connect your X account
- Write within 280 characters, or build the thread
- Attach up to 4 images, or one video under 140 seconds
- Pick a date and time and queue it
Write to 280 and get three platforms free
X has the tightest limit of the short-text networks:
| Platform | Limit |
|---|---|
| X | 280 |
| Bluesky | 300 |
| Threads | 500 |
| Mastodon | 500 |
A post written for X publishes unchanged to all four. If you’re on more than one of these, writing to X’s limit is the cheapest possible cross-posting strategy.
The things that don’t transfer are mentions, since handles differ per platform, and replies, which depend on a conversation that only exists in one place.
Plan limits
BulkPublish publishes to X and 14 other networks.
- Channels: Free: 3 (1 per platform). Pro: 30 (2 per platform). Business: 75 (5 per platform).
- Posts: Free: 3/day. Pro: 30/day. Business: unlimited.
Short answer
Yes, posts and threads. 280 characters, 4 images or a video under 140 seconds. Expect X to be priced separately in any third-party tool because its API genuinely costs money to use, and take advantage of the fact that writing to 280 gives you Bluesky, Threads and Mastodon for free.