Drag-and-drop posting
Start a post by dragging a file into the notch area or by clicking to browse, then continue in one flow instead of switching between network tabs.
PostBox
PostBox is a macOS app for posting one caption to multiple social and portfolio platforms from a single desktop workflow. It supports current networks like X, Bluesky, Threads, LinkedIn, Dribbble, and Instagram, with more platforms listed as coming soon.
Overview
PostBox is a macOS posting app built to move one post to several social and portfolio platforms from a single Mac workflow. The homepage frames it as a drag-and-drop poster that lets you add a file, write one caption, and publish to multiple destinations without opening separate tabs.
It is positioned for people who post regularly and want a faster desktop workflow across X, Bluesky, Threads, LinkedIn, Dribbble, and Instagram, with Pinterest, Shorts, and TikTok listed as coming next. The site also says accounts are connected with revocable credentials stored on the user’s Mac, and that the app requires macOS 26.2 or later.
Features
Single caption, multiple platforms
Write the caption once and send the same post to multiple networks at the same time, with the interface showing posts going out to individual destinations.
Network-shaped delivery
The homepage says the post is shaped for each platform, so the same source post can be adapted as it is delivered to different networks.
Current and upcoming platforms
Supported today are X, Bluesky, Threads, LinkedIn, Dribbble, and Instagram, with Pinterest, Shorts, and TikTok marked as coming soon.
Mac-local account credentials
PostBox says you connect accounts with revocable credentials stored on your Mac, rather than keeping your password on the service side.
Free and Pro usage tiers
The pricing section shows a free plan with 30 posts every 30 days and a Pro plan with unlimited posts plus unlimited accounts on each live platform.
Use cases
Cross-posting a new announcement
For a launch announcement, a creator can prepare one post, attach the relevant asset, and publish it to the live networks from a single Mac workflow.
Posting to both social and portfolio channels
For someone maintaining a personal portfolio or social presence, PostBox can reduce the effort of posting the same update to both social and portfolio-style destinations.
Light-to-heavy posting workflows
For regular posters, the app’s free tier and Pro upgrade make it possible to start small and move to unlimited posting once the workflow becomes habitual.
Replacing tab-heavy manual posting
For users who want fewer browser tabs and less manual repetition, the drag-and-drop flow offers a desktop alternative to opening each network separately.
Pros and Cons
Pros
- One caption can be sent to several platforms at once from a single desktop workflow.
- The app is designed for drag-and-drop posting, which reduces tab switching and manual repetition.
- Accounts are described as using revocable credentials stored on the Mac.
- A free tier is shown, along with a Pro trial and unlimited posting on the paid tier.
- The homepage explicitly lists the current platforms, so the supported network set is visible up front.
Cons
- The app only runs on Mac, and the site says it requires macOS 26.2 or later.
- Some supported platforms are not live yet; Pinterest, Shorts, and TikTok are marked as coming soon.
- The pricing and account pages do not fully spell out every plan detail on the captured pages.
FAQ
What does PostBox run on?
PostBox is a macOS app. The site says it requires macOS 26.2 or later.
Which platforms does PostBox support?
The homepage says PostBox posts today to X, Bluesky, Threads, LinkedIn, Dribbble, and Instagram. Pinterest, Shorts, and TikTok are listed as coming soon.
How does account connection work?
The site says you connect accounts with revocable credentials, and that those credentials stay on your Mac rather than being stored as your password.
Is PostBox free or paid?
The homepage presents a free plan with 30 posts every 30 days and a Pro plan with unlimited posts, a 14 day free trial, and yearly billing shown at $119.88 billed annually.
Quick Facts
- Category
- Social Media Management
- Platform
- macOS app
- Minimum OS
- macOS 26.2 or later
- Website
- postbox.sh
- Current networks
- X, Bluesky, Threads, LinkedIn, Dribbble, Instagram
- Pricing shape
- Free tier plus Pro plan with a 14 day free trial
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