The Master Gmail Account is the first user created automatically in your WizyEMM console, and is a "@gmail.com" email address.
It can be identified in your Admin Accounts tab, as having the name Master Account.
This Master Gmail Account is needed to setup your WizyEMM account, as it triggers the creation of your Managed Google Play account, which is then linked to your WizyEMM account.
Managed Google Play is what allow you to push, manage and configure your business applications to your devices - all of this is handled directly inside your WizyEMM console.
Find out more on Managed Google Play accounts on Google's Help Center.
It is a best practice to have a dedicated Gmail account (email@example.com), managed by your company and NOT use a personal Gmail address owned by private individuals (as they might leave your organization).
This Master Gmail Account:
- will forever be the Master Account of your WizyEMM console
- is a consumer @gmail address (it cannot be G Suite)
- is the email address which manages your company's Managed Google Play account