[simonholroyd]

Why not add a link as the 3rd step in addition to the invite code? Once the app's installed on a user's device you can pass through the code via a custom url scheme and avoid the possible drop off of having a user mis-enter their code. (you'd probably still want the code there in addition for users reading the email on a non iOS device)

[hablahaha]

You're already storing the code so why not just join the invite with the email and when the user logs in with an email flagged with an invite the user's state is already known?

[comatose_kid]

That's a good idea - we'll give that some thought as we work on streamlining our login flow (which is probably a good topic for a future post)