diff --git a/.gitignore b/.gitignore
index 1d77a72..4fd5a59 100644
--- a/.gitignore
+++ b/.gitignore
@@ -45,6 +45,7 @@ htmlcov/
 nosetests.xml
 coverage.xml
 *,cover
+mail/
 
 # Translations
 *.mo
diff --git a/test_data/Budget-Vorlage-2020.xlsx b/test_data/Budget-Vorlage-2020.xlsx
new file mode 100755
index 0000000..a23bb10
Binary files /dev/null and b/test_data/Budget-Vorlage-2020.xlsx differ
diff --git a/test_data/Verwendungsnachweis_und_Kassenstand_SAP.xlsx b/test_data/Verwendungsnachweis_und_Kassenstand_SAP.xlsx
new file mode 100644
index 0000000..3f712d6
Binary files /dev/null and b/test_data/Verwendungsnachweis_und_Kassenstand_SAP.xlsx differ
diff --git a/test_data/Verwendungsnachweis_und_Kassenstand_SAP_Zahlen.xlsx b/test_data/Verwendungsnachweis_und_Kassenstand_SAP_Zahlen.xlsx
new file mode 100644
index 0000000..52a877f
Binary files /dev/null and b/test_data/Verwendungsnachweis_und_Kassenstand_SAP_Zahlen.xlsx differ
diff --git a/test_data/recipients.txt b/test_data/recipients.txt
new file mode 100644
index 0000000..c998bad
--- /dev/null
+++ b/test_data/recipients.txt
@@ -0,0 +1,3 @@
+frey@imtek.de
+imtek@holgerfrey.de
+superx@holgerfrey.de
diff --git a/test_data/test export data.numbers b/test_data/test export data.numbers
new file mode 100755
index 0000000..74e7891
Binary files /dev/null and b/test_data/test export data.numbers differ
diff --git a/tests/test_helpers.py b/tests/test_helpers.py
index d4823a1..8aee264 100644
--- a/tests/test_helpers.py
+++ b/tests/test_helpers.py
@@ -102,7 +102,11 @@ def test_find_recipients_ok(example_root):
 
     result = find_recipients(example_root, "recipients.txt")
 
-    assert result == ["frey@imtek.de", "foo@example.com", "bar@example.com"]
+    assert result == [
+        "frey@imtek.de",
+        "imtek@holgerfrey.de",
+        "superx@holgerfrey.de",
+    ]
 
 
 def test_find_recipients_default(example_root):