To be noted
Under the free plan, any user can invite new team members on Slite.
Under the paid plans, there are admin features so that admins can control who can and cannot invite.
How to invite new team members
Invite link
Just send that link for anyone to join your team.
Auto join
For all team members under the same email address domain to join your Slite organization without receiving and accepting an invitation. Read more here.
SSO
Under paid plans, you can enable SSO for your team. Read more here.