So, you invited a team member but they didn't get an email...
Sometimes it gets caught in spam, but not to worry!
Your team member doesn't need any special email.
Just tell them to do these steps:
Go to https://dealmachine.com
Sign up for an account using the Same Exact Email Originally Invited
(Don't worry, it's not going to charge you or start a trial, that's just the button you have to click to enter an email address)
It will join the team member to the correct team.
The team member just needs to complete the verification steps and then they're in.