If you've invited a team member into Receptive but they have lost the email for whatever reason, then you can simply re-invite them by filling out the form again.
Go to "Settings", then "Manage Team". Then click the green button that says "Invite team member" and fill in their details.
Maybe give them a heads up that an invite is on its way so they keep an eye out for the email.
Any more questions? Get in touch and we'll be happy to help!