Publish to Slack like a native.
Schedule messages to Slack channels via the official API, with Markdown formatting and file attachments.
Slack
Communities, customer Slack groups, internal teams.
Workspace announcements, on autopilot.
Connect Slack
One OAuth click. Native API, no scraping.
Compose with preview
See the post the way Slack will render it.
Schedule or post now
Pick a time or ship immediately. The queue handles retries.
Watch the numbers
Engagement, impressions, replies. Hourly refresh.
What you can publish
- Channel messages
- Mentions
- Attachments
Platform limits
- Message limit
- 40,000 chars
- Blocks per message
- Up to 50
- Attachments
- Up to 100
Slack on FoPost
Everything you need to publish Slack content at scale, without compromising the native features that make Slack work.
File attachments
Rich layouts: headers, dividers, image grids, action buttons.
Threaded replies
Schedule the original and follow-up reply messages.
Mentions
@channel, @here, @user, supported.
Recurring updates
Daily standups, weekly newsletters.
Webhook-based
Uses Slack incoming webhooks, no app install required.
AI drafting
Draft the update in the composer or the agent, then schedule it here.
Who uses FoPost for Slack?
Customer Slack groups
Weekly product updates to all customer channels.
Internal comms
All-hands updates scheduled across timezones.
Community management
Daily questions of the day.
How FoPost connects
Connects via Slack incoming webhook URL. No OAuth, no permissions.
Connect Slack in under a minute.
7-day free trial. Every platform unlocked from day one.