diff --git a/email_client.py b/email_client.py
index 1bde26a..8526d01 100644
--- a/email_client.py
+++ b/email_client.py
@@ -10,6 +10,7 @@ from email.message import EmailMessage
 import re
 import datetime as dt
 import time
+import glob
 
 EMAIL_ACCOUNT = "bzigr02"
 EMAIL_FOLDER = "INBOX"
@@ -154,7 +155,13 @@ class Participation(object):
         if not os.path.exists(PARTICIPANTS_FOLDER):
             os.mkdir(PARTICIPANTS_FOLDER)
         if not filename:
-            filename = os.path.join(PARTICIPANTS_FOLDER, "".join(self.name.split())) + ".csv"
+            stub = os.path.join(PARTICIPANTS_FOLDER, "".join(self.name.split())) + "*"
+            matches = glob.glob(stub)
+            if len(matches) > 0:
+                filename = os.path.join(PARTICIPANTS_FOLDER, "".join(self.name.split())) + "_%i" % len(matches) + ".csv"
+            else:
+                filename = os.path.join(PARTICIPANTS_FOLDER, "".join(self.name.split())) + ".csv"
+
         header = ["LastName", "FirstName", "eMail", "Phone", "Institute", "Street", "City",
                   "RegDate", "CareerStage", "Fee", "FarewellEvent", "GwinnerAward", "LabTour",
                   "FoodVegetarian", "FoodVegan", "FoodGlutenFree", "FoodNoPref"]