add ip change notification and refine sender display

tests/test_config.py

@@ -61,6 +61,7 @@ def test_settings_support_smtp_fields(monkeypatch) -> None:
     monkeypatch.setenv("SMTP_PORT", "2525")
     monkeypatch.setenv("SMTP_USERNAME", "smtp-user")
     monkeypatch.setenv("SMTP_PASSWORD", "smtp-password")
+    monkeypatch.setenv("SMTP_FROM_NAME", "Home Automation")
     monkeypatch.setenv("SMTP_FROM_ADDRESS", "sender@example.com")
     monkeypatch.setenv("SMTP_TO_ADDRESS", "recipient@example.com")
     monkeypatch.setenv("SMTP_USE_STARTTLS", "false")
@@ -72,6 +73,7 @@ def test_settings_support_smtp_fields(monkeypatch) -> None:
     assert settings.smtp_port == 2525
     assert settings.smtp_username == "smtp-user"
     assert settings.smtp_password == "smtp-password"
+    assert settings.smtp_from_name == "Home Automation"
     assert settings.smtp_from_address == "sender@example.com"
     assert settings.smtp_to_address == "recipient@example.com"
     assert settings.smtp_use_starttls is False