Slack Scheduler
Schedulin schedules announcements, updates, images, and video to any channel in your Slack workspace. Add the Schedulin app once through Slack's own authorization screen, pick a channel per post, and it publishes on time — for community managers, marketing teams, and anyone running a customer or member Slack.
From $5/mo · Unlimited posts · 7-day free trial · No credit card required
How do I schedule a message to a Slack channel?
One OAuth click to add the app, then a channel ID on each post. No webhooks or bot tokens to manage.
Add the Schedulin app
Click Connect Slack on the Channels page. Slack's authorization screen asks you to approve Schedulin for your workspace. Approve, and the workspace appears in Schedulin.
Copy a channel ID
In Slack, open the channel, click its name at the top, and copy the Channel ID from the bottom of the About tab. It starts with C (or G for some private channels).
Write the post
Paste the channel ID into the composer, then add your message with Slack formatting, images, or a video.
Schedule it
Pick a time or add it to your queue. Schedulin posts the message on time and saves a direct link to it.
Why schedule Slack announcements?
Slack's built-in scheduler sends messages as you, one at a time, from your own account. That's fine for a reminder to a coworker. It falls apart when you run a community or customer workspace: weekly roundups, event reminders, release notes, and welcome threads that need to go out on a rhythm, often alongside the same announcement on X, LinkedIn, or Discord.
Scheduling Slack in Schedulin puts those messages on one calendar with the rest of your content. Because each post carries its own channel ID, a single connected workspace can have launch notes in #announcements, event reminders in #events, and a Friday roundup in #general — all queued ahead of time and all visible next to the posts going to your other networks.
Schedulin posts as its app, not as your personal Slack account. It joins public channels on its own; for private channels, invite the Schedulin app to the channel first.
Schedule Slack posts in seconds
Group accounts, publish to every channel at once, and keep media, captions, and hashtags perfectly in sync.
What does Schedulin support on Slack?
Native Slack messages with real images and uploaded video, posted by an app installed in your workspace.
Formatted messages
Captions are posted with Slack's mrkdwn formatting, so *bold*, _italics_, lists, and links render the way they do when you type them in Slack.
Images inline
Attached images render inline under your message, so the announcement and its visual arrive together.
Video as native files
Videos are uploaded to Slack as real files and shared in the channel with your caption, so members can play them without leaving Slack.
Any channel, per post
Choose the destination channel on each post by ID. Public channels are joined automatically; private channels work once the app is invited.
Multiple workspaces
Each workspace you authorize is its own account in Schedulin. Run a community Slack and a customer Slack from one Schedulin workspace.
Clear errors, not silent failures
If the app isn't in a channel or needs a permission it doesn't have, the failed post says exactly what to fix instead of disappearing.
What doesn't Slack scheduling cover?
Posting is one message per post into a channel the Schedulin app can access. Slack doesn't offer a metrics API for channel messages, so Schedulin doesn't report reactions or views for Slack posts. Published posts still show as completed with a link to the message.
Scheduled posts come from the Schedulin app rather than your own profile, which is usually what you want for announcements. Pair Slack with team collaboration so teammates can draft announcements for review before they go out.
Workspace announcements on your content calendar
See Slack announcements next to the social posts promoting the same launch or event, and drag to reschedule when plans change.
Explore the calendarLaunch day: Slack, Discord, and LinkedIn in one pass
Your community hears it first. Compose the announcement once and send it to your Slack workspace, your Discord server, and your LinkedIn audience together, with per-network edits where they need them. See how scheduling works.
Free tools for Slack community managers
No account needed — use them right now.
Keep your Slack community active on a schedule
Add the app, queue this week's announcements, and let Schedulin post them on time.
Start your free trialStarter
Best for beginner creators
- 3 connected social accounts
- Invite up to 3 team members
- $0/month in AI credits
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- 12 connected social accounts
- Invite up to 3 team members
- $3/month in AI credits
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Best for scaling brands
- 30 connected social accounts
- Invite up to 10 team members
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Bulk 100
Best for agencies and high-volume posting
- Up to 100 connected accounts
- Invite up to 10 team members
- $5/month in AI credits
Every plan includes
- Multiple accounts per platform
- Unlimited posts
- Schedule posts
- MCP agent connect
- Carousel posts
- Bulk video scheduling
- Content studio access
- Full REST API & webhooks
- Analytics (beta)
- Priority human support
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