- Log-in into https://account.riseup.net/
- Click on "Invites" on the left menu
- Now click on the green "Create New Invite" button
- Copy the code or write it on a piece of paper and give it to the person you want
Some remarks:
- You need to have a Riseup email account to be able to create an invite code
- New accounts can't generate invite codes, after some time this feature gets enabled
- Due to many accounts creating problems we have had to adjust our policy and now consider "new" accounts those that are less than several years old