Slack does not have a global account system. Instead, each workspace operates independently.
1
Go to <http://my.slack.com/account>
2
Enter the email address associated with the workspace you want deactivate
3
Click "Sign in with email"
4
Slack will display a list of all the workspaces you're signed up to using that email address
5
Click "Show xx more workspaces" at the bottom if the list is longer than 5
6
Find the one you want to deactivate and click on it
7
Scroll down to the bottom of the page and click "Deactivate your account"
8
Enter your password
If you've forgotten your password
9
Click "Need to create or reset your Slack password?"
10
Check your email and open the "reset your password" email from Slack
11
Click "Choose a new password" in the email
12
Enter and confirm your new password
13
Click "Change my password"
14
Click on back to "Account & profile" in the left menu
If you remember your password
15
Enter your password and click "Confirm password"
To deactivate your account
16
Click "Yes, deactivate my account"
