SLACK
Slack Post Scheduler to Schedule Slack Messages and Channel Announcements
Schedule Slack messages in bulk
AI content built for Slack
Cross-post to 28+ channels
Team approvals before publish
How Postiz works with Slack
Create a free Postiz account
Sign up at platform.postiz.com. No credit card is needed for the trial, and the Slack channel is available on every plan.
Add Slack as a channel
In the Postiz dashboard open Channels, click Add Channel and pick Slack. You are redirected to Slack's own authorization screen.
Authorize the Postiz app in your workspace
Choose the workspace, review the requested scopes (posting messages, reading the channel list, uploading images) and click Allow. Postiz stores the bot token encrypted and never reads your existing messages.
Pick the channels you want to post to
Public channels appear immediately; Postiz joins them automatically before the first post. For private channels, run /invite @Postiz once inside the channel and it shows up in the picker.
Schedule your first message
Open the calendar, write or generate a message, attach images, and choose a date and time. Postiz posts it to Slack at that moment and threads any follow-ups under the original message.
Step-by-step screenshots are in the Slack setup guide. Read how Postiz collects, stores and deletes workspace data in the privacy policy, or reach the team any time on the support page.
Everything you need in a Slack post scheduler
Visual Slack content calendar
See every Slack message, draft, and queued announcement on a month or week view. Drag to reschedule, click to edit, filter by workspace, channel, or teammate.
Bulk upload and CSV import
Load hundreds of Slack announcements at once from a CSV or spreadsheet. Postiz stages them as drafts so you can review before anything goes live.
AI-powered Slack messages
Turn a release note, FAQ, or URL into a ready-to-publish Slack message. The AI adapts tone and length to fit each channel's audience.
Analytics that matter
Track reach, reactions, and click-throughs on every scheduled Slack post. See which messages and send times actually drive engagement inside your workspace.
7-day free trial
Start a 7-day free trial, connect your Slack workspace, and schedule your first messages in minutes. Pick the plan that fits once your team is set up.
Take the hassle out of Slack
Draft up to 100 posts in advance and schedule them to go live at the optimal time, leaving you more time to do the things you love (like scrolling through Slack)
Frequently asked questions
