diff --git a/slackmail.py b/slackmail.py
index 1bc6909..3bb4244 100644
--- a/slackmail.py
+++ b/slackmail.py
@@ -37,8 +37,10 @@ def call_method_auth(method, args = dict()):
 #
 if call_method("api.test")["ok"] == False:
     sys.exit(1)
-if call_method_auth("auth.test")["ok"] == False:
+auth = call_method_auth("auth.test")
+if auth["ok"] == False:
     sys.exit(1)
+team = auth["team"]
 
 
 
@@ -84,15 +86,18 @@ def write_message(fout, message):
     _write_message(fout, name, message)
 
 
+tmp_dir = "/tmp/%s" % team
+if not os.path.exists(tmp_dir):
+    os.mkdir(tmp_dir)
 
-os.mkdir("/tmp/slackmail/")
 for id in list_channel_ids():
     channel = find_channel_info(id)
     if not channel["is_member"]:
         continue
     if channel["unread_count"] == 0:
         continue
-    fout = open("/tmp/slackmail/%s" % channel["name"], 'w')
+
+    fout = open("%s/%s" % (tmp_dir, channel["name"]), 'w')
     fout.write(channel["purpose"]["value"].encode("utf-8").decode("latin-1"))
     fout.write("\n")
     for message in read_channel(id, channel["last_read"]):