If you're studying CAPTCHA bypass or automation for defense purposes, look into:

To successfully automate Google account registration at scale, a script must manage several technical challenges:

For developers building applications that integrate with Google APIs, creating a Google Workspace Sandbox or Developer account allows the programmatic generation of user mailboxes within your own controlled domain environment under official APIs.

Automating against Google is a constant arms race that you will eventually lose. The most valuable, stable, and ethical asset you have is not a batch of script-generated emails—it is a single, trusted digital identity that you manage with care and respect for the platform’s rules. Before you run that script, ask yourself: is the risk of a permanent ban worth a few seconds of convenience? For most, the answer is no.