app/models/__init__.py:220:    message_type = Column(String(40), default="html")
app/models/__init__.py:222:    attach_pdf = Column(Boolean, default=False)
app/models/__init__.py:223:    attach_pdf_template_id = Column(Integer, ForeignKey("html_templates.id", ondelete="SET NULL"))
app/models/__init__.py:225:    attach_mode = Column(String(40), default="none")  # none|pdf|file|image
app/models/__init__.py:236:    send_interval_seconds = Column(Float, default=1.0)
app/models/__init__.py:238:    max_retries = Column(Integer, default=3)
app/models/__init__.py:239:    retry_delay_seconds = Column(Integer, default=60)
app/models/__init__.py:252:    unsubscribe_enabled = Column(Boolean, default=True, nullable=False)
app/core/config.py:48:    DEFAULT_RETRIES: int = 3
app/core/config.py:49:    DEFAULT_RETRY_DELAY_SECONDS: int = 60