"""
Authentication provider implementations for Mail Intake.

This package defines the **authentication layer** used by mail adapters
to obtain provider-specific credentials.

It exposes:
- A stable, provider-agnostic authentication contract
- Concrete authentication providers for supported platforms

Authentication providers:
- Are responsible for credential acquisition and lifecycle management
- Are intentionally decoupled from adapter logic
- May be extended by users to support additional providers

Consumers should depend on the abstract interface and use concrete
implementations only where explicitly required.
"""

from .base import MailIntakeAuthProvider
from .google import MailIntakeGoogleAuth

__all__ = [
    "MailIntakeAuthProvider",
    "MailIntakeGoogleAuth",
]