The option to associate a non-Gmail address, such as a corporate email, with a Google Account exists. This allows individuals to access Google services like Drive, Docs, and Calendar without needing a @gmail.com address. For instance, a user with an email address at “example.com” can create a Google Account and use that address as their primary identifier.
This functionality is valuable because it separates personal and professional email communication while consolidating access to Google’s suite of applications. It allows individuals to maintain continuity with Google services even if they change jobs, as their personal Google Account remains independent of their employer. Historically, Google Accounts were tightly coupled with Gmail, but this has evolved to provide greater user flexibility.