Invitation list shows the invitation history your account sent.

You can find this page by Personal Settings -> Invitation List

• Invitation Email: the email address you invite.

• Company Name: the company you invite to join in. This may be empty if you didn't fill in company when inviting.

• Status: describing whether the user has accepted your invitation or not.
  • Pending: has not accepted your invitation yet.
  • Successful: has accepted your invitation.
  • Expired: the invitation has been invalid.

• Invitation Time: the time when you send invitation.

• Action: 
  • Re-invite: if the invitee didn't accept your invitation, you can click Re-invite to resend invitation email.