Removing a device from Android Device Manager for a specific account I work at a small phone repair chain. When I'm logged into the Gmail or Inbox apps with the company's shared Google e-mail account on my private phone, my phone is listed in Android Device Manager for the work account. This allows any and all of my colleagues to Lock or Erase my phone. No thank you.
My phone is an LG G4 running Marshmallow.

How can I remove (not hide) my phone from the Android Device manager for my work account and still receive e-mail on it?
Actually, it is very straightforward. 
Remove the work Google account from your phone and then add it to Gmail app as an IMAP account instead of a fully functional Google account.
If it is added as an IMAP account, it doesn't get linked to ADM or any other Google app, for that matter.
From How to add Gmail account without adding Google account on Android - Gmail Community

Instead of adding the account as a Google account, add it as type Personal (IMAP).  That way only Gmail will be connected.  The settings are:

Incoming servername:imap.gmail.com
Port: 993
Encryption: SSL
Outgoing server name: smtp.gmail.com
Port: 465
Encryption: SSL