Next Previous Actions,activity,access logs,accessibility,add,add an app,Add members,Add to Slack,administrators,all passwords,analytics,android,announcement,announcements,App Directory,app icon,Apple Watch,approving apps,archive,Asana,Atlassian,Automation apps,badge,billing details,billing,Bitbucket,bot user,box,browse,calls,Calls:,cancel,changes,channels,channel instantly,channel management,channel notification,channel suggestions,claim domains,close,company culture,compliance exports,compose,computers,conversations,convert,connect,connected accounts,connection,connecting,copy messages,create,customization,customize,custom SAML,custom,customer support teams,data exports,data security,deactivate,default channels,delete,deletion,deploy slack,desktop,direct messages,directory,disable,discover and join,Discovery APIs,display name,DMs,Do Not Disturb,domain,domains,downgrade,dropbox,duplicate accounts,edit,editing,education,email address,email,emoji,emoticons,Enterprise Grid,Enterprise Mobility Management,executives,export,failed payments,Fair Billing,faqs,finding,format,formatting,framework for apps,free trials,general,getting started,giphy,github integration,github organization,github,glossary,google apps,google calendar,google drive,guests,highlights,hipchat,human resources,IFTTT,import,Incoming WebHooks,integrations,ios,invite,IT teams,JIRA,join,Keep up,keyboard layout,keyboard shortcuts,Keychain Access,keyword notifications,language,languages,leave,link previews,loading,limits,links,linux,mac,manage a workspace,manage apps,manage members,marketing,mention,merge,message actions,messages are displayed,message display,microsoft products,mobile,mobile push,move channels,moving workspaces,multiple,mute,name,names,noise,nonprofits,notify,OneDrive,onboard,owners,password,payment,payments,permissions,phones,pin,plan,plans,plus plan,polls,primary ownership,privacy policies,prioritize tasks,private,private channel,private notes and files,project management,public channel,purpose,Quick Switcher,quote,reactivate,read,recruitment,referrer information,reminder,remove,rename,retention,Request a new workspace,role,roles,RSS,sales,Salesforce,SAML,SCIM,SCIM provisioning,screen reader,search,send,session duration,share messages,share,shared channel,shared channels,sidebar,sign in,sign out,signup mode,single sign-on,Slack Day,Slack for Teams,Slack notifications,Save notes and files,Service Level Agreements,ServiceNow,sign up,slack status,slackbot,slash commands,snippet,snooze,software developers,star,statistics,Stride,sync,tablets,tax,threads,time zone,tips,to-do lists,topic,triage channels,Terms of Service,Trello,troubleshoot,trouble receiving,tour,twitter,two-factor authentication,unread messages,updates,upgrade,upload,username,user groups,URL,vacation,Vendor and remittance,video,voice call,voice,what is,what's important,whitelisting,windows phone,windows,working in,workspace apps,workspace creation requests,workspace discovery,workspace's settings,wunderlist,your actions,Zapier,zoom,features,#general,File storage,posts,dark mode,theme,Workflow Builder,Voice,video,screen sharing,workflows,Outlook Calendar,Invited members,Transfer ownership,Whitelist,Enterprise Key Management,Transport Layer Security,Strong customer authentication,CSV,text file,work hours, Search for “[term]” See [n]+ more results → Manage how people join your workspace
By default, people need an invitation to join a Slack workspace. If they'd like, Workspace Owners and Admins can approve certain email domains to allow anyone with an approved email address to join their workspace.
Note: Enabling single sign-on (SSO) will override your workspace signup preferences.
Set your workspace signup mode
From your desktop, click your workspace name in the top left.
Select Settings & a dministration from the menu, then click Workspace settings.
Next to Joining This Workspace , click Expand .
Choose Allow i nvitations, and approve invitations for any email address from these domains.
Enter your domain(s), then click Save.
Anyone with an approved email address can join by clicking your workspace's sign-up link, or entering their email on the sign-in page.
Note: If a member of your workspace requests an invitation for someone with an approved email address, the request will be approved automatically.
Who can use this feature?
Workspace Owners and Admins
Free, Standard, and Plus plans