diff --git a/share/apps.json b/share/apps.json
index 3bf6fac8f..7d5882ec2 100644
--- a/share/apps.json
+++ b/share/apps.json
@@ -3500,6 +3500,14 @@
 			"headers": { "X-ServedBy": "squarespace" },
 			"env": "^Squarespace"
 		},
+		"SquirrelMail": {
+			"website": "squirrelmail.org",
+			"cats": [ 30 ],
+			"html": "<small>SquirrelMail version ([.\\d]+)[^<]*<br \\;version:\\1",
+			"url": "/src/webmail\\.php(?:$|\\?)",
+			"env": "^squirrelmail_loginpage_onload$",
+			"implies": "PHP"
+		},
 		"Squiz Matrix": {
 			"website": "squiz.net",
 			"cats": [ 1 ],
diff --git a/share/images/icons/SquirrelMail.png b/share/images/icons/SquirrelMail.png
new file mode 100644
index 000000000..4e8ba7e5b
Binary files /dev/null and b/share/images/icons/SquirrelMail.png differ