diff --git a/smtp/date.js b/smtp/date.js
index c0b84c6..52287f1 100644
--- a/smtp/date.js
+++ b/smtp/date.js
@@ -1,3 +1,8 @@
+/**
+ * @param {Date} [date] an optional date to convert to RFC2822 format
+ * @param {boolean} [useUtc=false] whether to parse the date as UTC (default: false)
+ * @returns {string} the converted date
+ */
 function getRFC2822Date(date = new Date(), useUtc = false) {
 	if (useUtc) {
 		return getRFC2822DateUTC(date);
@@ -17,7 +22,11 @@ function getRFC2822Date(date = new Date(), useUtc = false) {
 
 	return dates.join(' ');
 }
-
+/**
+ *
+ * @param {Date} [date] an optional date to convert to RFC2822 format (UTC)
+ * @returns {string} the converted date
+ */
 function getRFC2822DateUTC(date = new Date()) {
 	const dates = date.toUTCString().split(' ');
 	dates.pop(); // remove timezone