PropelAuth provides a comprehensive suite of customization options for controlling user access to digital products, ranging from disabling public signups to implementing domain-specific restrictions. The platform allows for granular management of user access through features such as allowlists and blocklists, which can be tailored to accommodate internal applications or manage unwanted signups from burner domains. For business-to-business products, PropelAuth offers functionalities to prevent personal email signups, ensuring better tracking of company engagements. Additionally, the platform supports invitation-based user expansion and provides advanced access management through Enterprise SSO/SAML, enabling organizations to control application access via centralized systems like Okta or Microsoft Entra ID. Through its flexible settings, PropelAuth enables product owners to tailor user access in a way that aligns with their specific needs and preferences.