# DunSocial for Slack

> Pick a channel while you compose, then publish text and files on the same calendar as everything else.

- Network: Slack
- Formats and limits: 4,000 characters. Up to 10 attachments (JPG/PNG/GIF/WebP and MP4/WebM/MOV). 50 MB per file. Channel required.
- Price: $20 per month, $192 per year, 14-day free trial. Adding this network does not change the price.

## What this network accepts

| Capability | Supported |
| --- | --- |
| Text | Yes |
| Images | Yes |
| Video | Yes |
| Threads | No |

## What DunSocial does here

### Pick the channel before it sends

Choose a public or private channel in compose so the message lands where you meant it to.

### Stay inside 4,000 characters

The Slack composer catches overflow before the message can be scheduled.

### Attach images and video

Add up to 10 files. The composer checks the 50 MB per-file cap before the post enters the queue.

### Publish from the same queue

A Slack update sits next to X and LinkedIn so a launch can go out together — including from Claude or Cursor.

## Who it is for

- **Founders** — Post ship notes to the team channel
- **Developers** — Publish Slack updates from Cursor or Claude
- **Marketing teams** — Put Slack in the same campaign calendar
- **Agencies** — Keep each client workspace in its own DunSocial workspace
- **Personal brands** — Schedule channel posts without opening Slack

## What it does not do here

- One Slack team per workspace. Reconnect to switch teams.
- Text and attachments only. No DMs, thread replies, or Block Kit.
- No Slack analytics.
- The Slack agent in Settings is a separate app — connect Slack again to publish.

## Frequently asked questions

### Does DunSocial support Slack?

Yes. Slack is generally available on the flat $20/mo plan: connect one Slack team, pick a channel, then compose, schedule, preview & publish with no per-network add-on.

### How do I connect Slack?

Open Connect, authorize the DunSocial publish app, and pick the Slack team. Each workspace connects one Slack team. You choose the channel later, when you compose. This is a second Slack app if you already use the Slack agent.

### Can I schedule Slack messages in advance?

Yes. Unlimited scheduling. Pick a channel, write the message, optionally attach files, and DunSocial publishes at the time you set.

### What can I attach to a Slack message?

Up to 10 images or videos (JPG, PNG, GIF, WebP, MP4, WebM, or MOV). Each file must stay under 50 MB. Text is required unless you attach media.

### Can I post to more than one Slack team?

Not from the same workspace. Connect one Slack team per workspace. To publish to another team, reconnect Slack and pick that team, or use a separate workspace.

### Can I post Slack DMs, thread replies, or Block Kit?

Not in this version. DunSocial publishes text and files to a public or private channel.

### Is this the same as the Slack agent?

No. The Slack agent in Settings drafts and schedules to other networks from Slack. Slack as a publish destination is a separate Slack app. You connect it from Compose / Connect.

### Can I publish Slack messages from ChatGPT or Claude?

Yes. Over MCP, your assistant lists channels with list_slack_channels, then uses schedule_slack_post or publish_slack_now on the same Slack account as the web app.

### Is Slack an add-on?

No. Slack is included in the flat $20/mo plan with unlimited scheduled posts & a 14-day free trial.

### Can teams manage Slack together?

Yes. Shared workspaces with roles cover Slack the same way they cover every other connected network. The publish bot stays on the one connected Slack team.

## Related

- Pricing: https://www.dunsocial.com/pricing (Markdown: https://www.dunsocial.com/pricing.md)
- MCP: https://www.dunsocial.com/mcp (Markdown: https://www.dunsocial.com/mcp.md)
- CLI: https://www.dunsocial.com/cli (Markdown: https://www.dunsocial.com/cli.md)
- REST API: https://www.dunsocial.com/api (Markdown: https://www.dunsocial.com/api.md)

## About this document

This is the Markdown representation of https://www.dunsocial.com/platforms/slack. The HTML version of the same page is at the same URL. You can also request Markdown from any page by sending `Accept: text/markdown`.

Machine-readable summary of the whole site: https://www.dunsocial.com/llms.txt

## Company

- Product: DunSocial, https://www.dunsocial.com
- Legal entity: THISUX PRIVATE LIMITED, Chennai, Tamil Nadu, India
- Support: support@dunsocial.com
- Open the app: https://app.dunsocial.com/login