Slack

Publish to Slack from one place

Write once, tailor it for Slack, schedule it and see how it did — in the studio, or with one API call alongside 18 other networks.

Connect Slack Read the docs

message
scheduling
analytics

Why Publishing Studio

Skip building your own Slack integration

With Publishing Studio

Connect in the studio, or inside your own app with headless connect. We store the access and check it daily.
Every post checked against Slack's limits before it's sent.
One request shape for Slack and 18 other networks.
Retries run only what failed, and duplicates are refused.
Signed webhooks when a post lands or an account needs reconnecting.

Building on Slack yourself

Build and maintain Slack's sign-in flow and store its credentials securely.
Track Slack's limits and API changes, and find out about them when posts fail.
Write a separate integration for every other network you add.
Build your own retry, duplicate and partial-failure handling.
Poll to learn what happened to each post.

How it works

Three steps to Slack

1
Connect your account
Add to Slack, then choose the channel to post in.
2
Write once
Compose in the studio and tailor the text or media for Slack, or send one POST /posts request from your code.
3
We handle the rest
We publish now or on schedule, retry what fails, and tell you the result — in the studio and by webhook.

Features

What you can do on Slack

Posts

Publish to Slack from the same editor as every other network.

Schedule and queue

Publish now, at a set time in any time zone, or into your posting queue.

Checked before it's sent

Character count, media type, size are checked against Slack's limits while you write.

Alt text

Image descriptions are sent to Slack so your posts stay accessible.

Analytics

Track likes, comments for every Slack post, next to your other networks.

Delete from the studio

Remove a published post from Slack without leaving Publishing Studio.

Limits at a glance

Slack's rules, built in

Text: Up to 40,000 characters
Media: up to 10 images or up to 10 videos (optional)Images and video can be mixed.
Images: JPG, PNG, WebP, GIF · up to 256 MB each
Video: MP4, MOV, WebM · up to 256 MB
Formats: message

Get every network's limits as data from GET /validate.

For developers

Publish to Slack with one request

POST /posts → Slack

curl -X POST "https://dashboard.lifebliss.app/api/v1/posts" \
  -H "Authorization: Bearer $PS_API_KEY" \
  -H "Idempotency-Key: $(uuidgen)" \
  -H "Content-Type: application/json" \
  -d '{
    "content": "The full session is live.",
    "targets": [
      {
        "accountId": "SLACK_ACCOUNT_ID"
      }
    ],
    "publishNow": true
  }'

Quickstart · Headless connect · Webhooks

One integration

Reach 18 more networks with the same post

FAQ

Slack questions

More in the developer docs and on pricing.

How do I connect Slack?

Add to Slack, then choose the channel to post in.

What can I post to Slack?

message posts with up to 10 images or up to 10 videos.

How long can a Slack post be?

Up to 40,000 characters. The editor counts as you type and warns you before it's too long.

Can I schedule Slack posts?

Yes. Publish now, pick a date and time in any time zone, or add the post to your posting queue — in the studio or through the API.

Can I delete a post after it's published?

Yes, from the post's page in the studio.

Which Slack analytics do I get?

likes, comments for each post, collected automatically and shown next to your other networks.

Publish to Slack today.

14-day free trial, no card. Every feature included.

Connect Slack See all networks