Most Google services require a Google Account, and this does not require a Gmail address. The option to use an existing address (such as your work email), isn’t that obvious, but it’s available to you when selecting a “How you’ll sign in.”
Before you enter an email address, click on the “User your existing email” link in the lower right, then you can submit your work/other email to associate with the Google Account.
Avoid Using Your Personal Gmail Address
Using a personal Gmail address can present several problems:
- Emails relating to the logged-in services will be received on personal accounts instead of work accounts.
- Your email domain can/should identify what company you represent. This makes user access management much easier.
- Separation of accounts generally increases security in that a compromise of one account doesn’t automatically compromise everything.
- Using your organizational email address means the organization can usually recover / manage access if there are problems or changes in team membership.