How To Slack Someone Outside Of Company

If you are looking for a way to connect with individuals outside of your organization using Slack, you have come to the right place. This blog post will walk you through the simple process of Slacking someone outside of your company. Let’s begin.

Sending Direct Messages to People Outside Your Company

Slack allows you to send direct messages to people outside your workspace through shared channels or guest accounts. Here’s how it works:

Step 1: Create a Shared Channel:

First, create a channel that is shared between your workspace and the workspace of the person you need to contact. Here is how you can do this:

  • Click on “+” next to “Channels” in your workspace sidebar.
  • Select “Create a channel“.
  • Provide necessary details for your new channel and make sure to turn on the “Shared” toggle switch.
  • Finally, choose the workspace of the person you want to invite and click “Create“.

Once the channel is created, it will appear in both workspaces, and members from both workspaces can join and communicate.

Step 2: Send a Direct Message:

Once you and the external person are part of the same shared channel, you can start a direct message:

  • Click on the “+” next to “Direct Messages” in your workspace sidebar.
  • Search for the person’s name in the search box and select their name.
  • Click “Go” to start your conversation.

Inviting External People as Guests

If you need to have more prolonged communication with someone outside your company, you might want to consider inviting them as a guest to your workspace. Here is how you can do it:

  • Click on “+” next to “Direct Messages” in your workspace sidebar.
  • Click on “Invite people to [Workspace Name]“.
  • Select “Invite people outside your workspace“.
  • Provide the person’s email address and choose whether they will be a full member or a guest.
  • Finally, click “Send Invitation“.

The invited person will receive an email to join your workspace as a guest.


Slack makes it easy and convenient to communicate with people, whether they are inside or outside of your organization. By creating shared channels or inviting guests, you can effectively communicate and collaborate with people outside your company. Happy Slacking!