The issue with inviting users to Appcues accounts has been resolved.

We are currently experiencing an outage with our email provider, and we are unable to send account invitations to new teammates. We expect this to be resolved by Monday. If you have an urgent need to invite a teammate this weekend, please email support@appcues.com. We apologize for the inconvenience.

We have identified an issue with inviting users to Appcues accounts. We are working on a solution now.