tic-mail.com is the mail address The Insight Crew uses so coaches can keep their client conversations in one place. If it showed up in a message from your coach, the message came from them.
The part after your coach's name, like r8kq2vx7, ties your reply to the right conversation. It works the same way as the reply addresses used by help desks and booking tools.
Straight to your coach. They also get a copy in the notes for your coaching, so nothing you send gets lost between sessions. No one else reads it.
Yes. Nobody at tic-mail.com will ask for a password, payment details or a login code. If a message does, don't reply. Forward it to support@theinsightcrew.com instead.