Slack message scheduler

Schedule Slack messages from ChatGPT or Claude.

Connect your Slack workspace, tell your AI what to share, pick the channel and approve the message. It goes out on schedule under your own name, with the images or videos you attach.

Start free2 accounts free · no card

This page is about publishing your posts to Slack; to get Antwork's drafts, approvals and failed posts in a Slack channel instead, see Slack notifications. Slack notifications

The update your team needs is written. It is just not in Slack yet.

Sound familiar?

The announcement you drafted in ChatGPT, copied into Slack by hand.
A reminder that went out an hour late because you were in a meeting.
The same news posted to your socials and forgotten in Slack.

Antwork sends your Slack messages from the same conversation as the rest of your posts.

From a sentence to a scheduled week.

No new app to learn. It works inside ChatGPT, Claude or the Antwork app.

Connect your workspace
Sign in on Slack's own screen and allow Antwork to post as you. Then ask Claude or ChatGPT for the message and name the channel.
Edit what you want, approve the rest
Antwork does not read your channels' messages, so share one you liked and your AI follows it. Nothing goes out until you say so.
It posts on schedule
Pick the times, or let your AI spread the week. Posts go out from our servers, even with your laptop closed.

Your tone, from your example

Slack messages in your voice, from one example.

Antwork does not read your Slack channels, so there are no past messages to learn from. Paste one you were happy with and your AI follows its length, its emoji and how you sign off. You keep the edits and the final word.

Works for every Slack workspace you connect
You approve every post before it is scheduled

One workspace, any channel

Pick the channel on each post. It goes out as you.

Connect a Slack workspace once and choose the channel each time you post, from the public and private channels you are a member of. A post without a channel goes to the last one you used. Messages carry your own name, not a bot's, and text and files arrive as one message.

Up to 10 images and videos per message
Your text, as you wrote it

$0for 2 accounts and 10 posts a month

Start with your Slack workspace free. Move to Pro when you post more.

Pro is $19 a month for 5 accounts, unlimited posts and analytics, and every new account starts with 7 days of it. No seats, no card to start.

Start free See pricing

Scheduling on Slack, answered

Can you schedule a message in Slack?

With Antwork, yes: up to 30 days ahead, from ChatGPT, Claude or the web app, next to your other accounts.

Do the messages come from a bot?

No. You sign in on Slack's own screen and allow Antwork to post as you, so each message appears under your name, in channels you are a member of.

How do I choose the channel?

On each post: in the composer, or by naming it to your AI. Antwork lists the public and private channels you are a member of. A post without a channel goes to the last one you used.

What is the Slack message limit?

Slack advises keeping a message to 4,000 characters, and Antwork holds every post to that. Up to 10 images or videos go with the text as one message, each at most 1 GB. Source: Slack: chat.postMessage

Does Antwork read my Slack messages?

No. It lists your channels to offer them on a post, and reads back only the files it uploaded, to link to the message. There are no views or reactions per message in Antwork.

Is there a free Slack message scheduler?

Antwork's Free plan covers 2 connected accounts and 10 posts a month, with no card; Pro is $19 a month for 5 accounts and unlimited posts.

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