# Log files

> The plugin’s file-based debug logging: which channels write, and what they capture.

| Hook | Kind | Tier | Since | Summary |
| --- | --- | --- | --- | --- |
| [`boolean_smtp_log_file_enabled`](/hooks/boolean_smtp_log_file_enabled/) | filter | A | 1.0.0 | Filters whether one of BooleanSMTP's log channels writes to disk. |
| [`boolean_smtp_log_file_level`](/hooks/boolean_smtp_log_file_level/) | filter | A | 1.0.0 | Filters the least severe level a BooleanSMTP log channel writes. |
| [`boolean_smtp_log_file_retention_days`](/hooks/boolean_smtp_log_file_retention_days/) | filter | A | 1.0.0 | Filters how many days of a BooleanSMTP log channel's files are kept. |