invitation/referral code user registration signup

[1naveengiri]

It could be an add-on.

Do you have any addons or solutions to create an invitation/referral code user registration signup? We are looking to make our directory invitation-only in the beginning and would like to give existing users a way to refer other businesses to signup. https://secure.helpscout.net/conversation/1522550169/19729?folderId=3817467

[wpdev10]

Check if we can add compatibility with https://wordpress.org/plugins/all-in-one-invite-codes/ plugin for this functionality before we develop an addon. https://secure.helpscout.net/conversation/1560052806/21504/