# LOGLVL

> [HTML Version](loglvl.htm)

LOGLVL_ _specifies the degree of detail to be written to the log file per the following table. It is ignored if LOGFILE_ _is blank or not present, and it defaults to 1 (Errors only) if LOGLVL_ _is not specified. The options are perhaps not completely self-explanatory, but the best way to understand them is just to experiment with a few sample messages and different settings. Typically you would just leave this set to 1 and check it periodically for error messages. Note that in the debug modes (4 and 5) the log file provides a rather graphic tutorial on how the SMTP protocol works, since it documents both the commands sent to the server and the responses received.

| **Value** | **Result** |
|------|------|
| 0 | Off |
| 1 | Errors only |
| 2 | Info summary (to, from, number of bytes) |
| 3 | Full message (to, from header, body) |
| 4 | Partial debug (most commands and responses) |
| 5 | Full debug (everything) |




**History**

2023 June, A-Shell 6.5.1732, EMAILX.SBX(145):  Add the Subject line (if present in the header) to the LOGLVL 4 output.