What if I did not receive a Welcome Email?
Ask your IT department to whitelist emails from Autodesk. It may have been blocked.
OR
Use the Postini security and archive service to retrieve the welcome email.
1. Sign into Postini at https://login.postini.com/ and search for the Glue invitation with
the subject line "Welcome to BIM 360 Glue" from bim360-gluenotifications@autodesk.com.
2. Send the invitation to your inbox and approve the sender for all future emails.