Invite external organisations to share a channel

With Slack Connect, you can invite external partners to share a channel in Slack, allowing you to collaborate from your separate workspaces.

There are three steps to sharing a channel:

Note: To share a channel, every participating organisation must be using one of Slack’s paid subscriptions. If you're using the free version of Slack, learn how to upgrade your workspace.


Channel ownership

When you invite other organisations to share a channel, your organisation will own the channelOnly the organisation that owns the channel can do the following:

  • Invite external organisations to share the channel.
  • Remove organisations from the channel.
  • Continue using the channel if it’s no longer shared (the channel will be archived for external organisations).


Invite other organisations to share a channel

You can create and share a new channel from both your desktop and mobile device, or share a channel that already exists from your desktop. Keep in mind that invitation links expire after seven days. If an invitation expires before it’s accepted or approved, you can copy a new invitation link to share.

Note: If you'd like to invite additional organisations to a channel shared before 24th June 2020, someone from the invited organisation will need to allow the channel to be shared with multiple organisations first. 

Create and share a new channel 

Desktop

iOS

Android

  1. From your desktop, click your workspace name in the top left.
  2. Select Create a channel from the menu.
  3. Enter a channel name and a description, and decide if you’d like to make the channel private. For more details, see Create a channel.
  4. Tick the box next to Share outside [your workspace name], then click Next.
  5. Enter the email address(es) that you’d like to send an invitation link to, then click Send. You can also click on Copy share link to share an invitation link outside Slack.
  6. Click Finished.
  1. Tap the  Home tab at the bottom of the screen.
  2. Tap the  plus icon next to Channels.
  3. Tap Create in the top-right corner.
  4. Enter a channel name and a description, and tap the toggle next to Public if you’d like to create a private channel. For more details, see Create a channel.
  5. Tick the box next to Share outside [your workspace name].
  6. Tap Share a link to share an invitation link outside Slack. You can also tap Choose from contacts to search for and select the contacts that you’d like to send an invitation link to.
  7. Tap Done.
  1. Tap the  Home tab at the bottom of the screen.
  2. Tap the  plus icon next to Channels.
  3. Tap the  plus icon in the bottom right corner.
  4. Enter a channel name and a description, and tap the toggle next to Public if you’d like to create a private channel. For more details, see Create a channel.
  5. Tick the box next to Share outside [your workspace name].
  6. Tap Share a link to share an invitation link outside Slack. You can also tap Choose from contacts to search for and select the contacts that you’d like to send an invitation link to.
  7. Tap Done.


Share an existing channel

When you share an existing channel, members of other organisations can view the channel’s message history, members and bots.

  1. From your desktop, open the channel that you'd like to share.
  2. Click the  details icon in the top right.
  3. Click Organisations.
  4. Select Share channel.
  5. Enter the email address(es) that you’d like to send an invitation link to, then click Send. You can also click on Copy share link to share an invitation link outside Slack.
  6. Click Finished.

Note: If you've sent an invitation link but change your mind before it's been accepted, ask an owner or admin to write in to us. We'll revoke the invitation for you.


What’s next?

  • Anyone who receives your invitation to share a channel can choose to accept or decline it. For more details on how the invited organisation can do this, visit Accept an invitation to share a channel.

  • When someone accepts your invitation to share a channel, it must be approved by someone from your organisation who has permission to manage shared channels (and possibly also someone from the invited organisation, depending on their workspace settings).

Note: In the future, we plan to increase the maximum number of organisations that can share a channel. If your team would benefit from working with more than 19 other organisations, reach out to us – we’d love to learn more!

Who can use this feature?
  • All members (but not guests)
  • Standard, Plus and Enterprise Grid subscriptions